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- December 23rd, 2009
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broadcasthardware has posted a new entry on: Amplifier Circuit
Home Stereo Amplifier Using STK4241V
This home stereo amplifier circuit using STK4241V. This home stereo amp is equiped with STK4241V wich is a thick film hybrid IC, AF Power Amplifier (Split Power Supply) (120W+120W min, THD = 0.0…
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broadcasthardware has posted a new entry on: Amplifier Circuit
Simple Microphone Preamplifier
This simple microphone preamplifier circuit can use between your microphone and stereo amplifier. This amplifier microphone suitable for use with normal home stereo amplifier line/CD/aux/tape inputs.…
- December 21st, 2009
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broadcasthardware has posted a new entry on: Free Electronic Circuit | Cool Circuit Collections
Oxygen Sensor Simulator
This electronic circuit is an oxygen sensor simulator that built on a protoboard. Note the cigarette lighter plug used for power source. The adjustment knob is at the left, and the switch is on the ri…
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broadcasthardware has posted a new entry on: Free Electronic Circuit | Cool Circuit Collections
Making Really Good Homemade Printed Circuits Boards (PCBs)
Want to know how to make really really good homemade Printed circuit boards? This taken is from original posting of Mike's Electronic Stuff. This page contains a guide to producing consistently high q…
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broadcasthardware has posted a new entry on: Free Electronic Circuit | Cool Circuit Collections
Three in One Tester for Audio, Diode, and Circuit
This electronic schematic circuit is a test circuit for audio, diode and circuit. This very handy simple solid state battery operated tester. It works on two 1.2-1.5 AA-batteries. This three…
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broadcasthardware has posted a new entry on: Free Electronic Circuit | Cool Circuit Collections
Fan Controller with an LM76 as Temperature Estimator
This temperature sensor circuit is to control a small fan controller. An LM76 as temperature 'estimator' used in this project. To make it a little more interesting, an LPH7653 display to show the heat…
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broadcasthardware has posted a new entry on: Free Electronic Circuit | Cool Circuit Collections
Power Supply Circuit 12-15 Volt 20A
Output voltage of the power supply circuit is adjustable from fine potensiometer from 12V to 15v. It is suitable for all 12V power supply devices, or devices which are normally connected to a 12V batt…
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broadcasthardware has posted a new entry on: Free Electronic Circuit | Cool Circuit Collections
5A Power Supply 1.2-25V
The core of the power supply circuit is LM338K. The scheme circuit 5A power supply with adjustable output voltage from 1.2 to 25V. Construction circuit is compact, all elements except transformer, th…
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broadcasthardware has posted a new entry on: Free Electronic Circuit | Cool Circuit Collections
ICL7107 Digital LED Voltmeter
This circuit is a digital voltmeter with LED display. It's ideal to use for measuring the output voltage of your DC power supply. It includes a 3.5-digit LED display with a negative voltage indicator.…
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broadcasthardware has posted a new entry on: Free Electronic Circuit | Cool Circuit Collections
Battery Low Voltage Beeper
This electronic circuit is an alarm circuit for low battery condition. It provides an audible and visual low voltage warning for 12V battery powered devices. When the battery voltage is above the set…
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broadcasthardware has posted a new entry on: Free Electronic Circuit | Cool Circuit Collections
Car Anti-Theft Wireless Alarm
This alarm circuit is an anti- theft wireless alarm can be used with any vehicle having 6- to 12-volt DC supply system. The mini VHF FM radio-controlled, FM transmitter is fitted in the vehicle at nig…
- December 18th, 2009
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broadcasthardware has added
Dimmusacio to her friends list. - December 8th, 2009
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broadcasthardware has added
jbinolirao to her friends list. - December 6th, 2009
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broadcasthardware has added
Smdani to her friends list. - November 27th, 2009
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broadcasthardware has posted a new entry on: FM TV Electronics Guide
UHF TV Linear Push-Pull Power Amplifier with BLV859
A broadband linear power amplifier design is presented, suitable for application in TV transposers operating in band IV and V (470 to 860 MHz). The design is based on two BLV859 bipolar transistors co…
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broadcasthardware has posted a new entry on: FM TV Electronics Guide
Broadband UHF Power Amplifier For TV Transposers 3W
A broadband RF power amplifier design is presented, suitable for application in TV transposers, operating in UHF band IV and V (470 - 860) MHz, with simple printed circuit board. The RF power amplif…
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broadcasthardware has posted a new entry on: FM TV Electronics Guide
TV RF Power Amplifier 14W #2
From #1 TV RF Power Amplifier 14W BIAS CIRCUIT Below is the RF power amplifier's components part list and bias circuit for supply feeding. C1, C2, C4, C5, C6 = 1nF LCC Chip + 10nF LCC Chip C3 = 1…
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broadcasthardware has posted a new entry on: FM TV Electronics Guide
TV RF Power Amplifier 14W #1
This RF power amplifier works in frequency 470 - 860 MHz UHF Band IV and V with power out 14 Watts with input power 1.5 Watts. The power amplifier is suitable for amplifying rf signal your tv trans…
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broadcasthardware has posted a new entry on: FM TV Electronics Guide
UHF TV RF Power Amplifier 100W
The TV amplifier has been tuned under class-A small-signal conditions and characterised under large signal class-AB conditions from band IV - V in UHF. (All Datasheets) Amplifier Circuit The total d…
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broadcasthardware has posted a new entry on: FM TV Electronics Guide
Ring Circular Polarized Antenna for 88-108 MHz
This simple antenna called Ring Circular Polarized Antenna. You should construct this antenna with .5 inch copper. With a little experiment I did, antenna can be tuned in 88-108 MHz FM frequency range…
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broadcasthardware has posted a new entry on: FM TV Electronics Guide
TV RF Power Amplifier 470-860 MHz with BLW32-33
TV Linear Power Amplifier for 470-860 MHz taken from Philips Aplication Note (AN_BLW32_33). Please download file in PDF format.The Wide-Band UHF Power Amplifier for TV Transposer band IV/V designed w…
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broadcasthardware has posted a new entry on: FM TV Electronics Guide
FM Stereo Encoder for Beginner
This circuit is a simple fm stereo encoder. A method commonly used in (double side-band suppressed carrier) DSB-SC modulation to provide synchronisation between modulator and demodulator is to transm…
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broadcasthardware has posted a new entry on: FM TV Electronics Guide
80mW FM Transmitter with Dipole Antenna
This electronic circuit is a fm transmitter circuit that suitable for beginners for stereo encoder testing. Provided the input stage is designed to accommodate line input levels i.e. approx. 2Vrms int…
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broadcasthardware has posted a new entry on: FM TV Electronics Guide
Low Power VHF TV Transmitter
One of the most useful gadgets a video enthusiast can have is a low-power TV Transmitter. Such a device can transmit a signal from a VCR to any TV in a home or backyard. Imagine the convenience of bei…
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broadcasthardware has posted a new entry on: FM TV Electronics Guide
Stereo Compressor Limiter with Clipper for FM Broadcast
This application circuit is stereo audio compressor limiter with clipper for processing your FM audio signal. Limiter is a device, which weakens loud signals and intensifies silent signals. On its out…
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broadcasthardware has posted a new entry on: FM TV Electronics Guide
5W PLL FM Transmitter from Pira CZ
Here's a new Phase Locked Loop (PLL) FM Transmitter from PIRA CZ. This PLL controller is programmed by PIC PIC16F627A with a single I2C TSA5511 (TSA5512/SDA3202). The transmitter includes RDS/SCA inp…
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broadcasthardware has posted a new entry on: FM TV Electronics Guide
Tunable Dipole Antenna For FM Broadcast
This is a simple dipole antenna for FM broadcast. It can be tune for 88-108 MHz frequency range. It's very clear and easy to build. For more gain it can be stacked (2 or 4 antennas and used power divi…
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broadcasthardware has posted a new entry on: Electronic Schematic Collections On The Net
A Tiny and Accurate pH-meter
This electronic circuit is a tiny pH-meter. It is very tiny: 11cm2 including the PSU circuit! The schematic is shown below. It is basically a simple gain/offset circuit with a high impedance input (se…
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broadcasthardware has posted a new entry on: Electronic Schematic Collections On The Net
ESR Meter
The ESR Meter is basically an AC Ohmmeter with special scales and protective circuitry. It provides a continuous reading of series resistance in electrolytic capacitors. It operates at 100 kHz to keep…
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broadcasthardware has posted a new entry on: Electronic Schematic Collections On The Net
Simple Oxygen Sensor Simulator Circuit
This electronic circuit is an oxygen sensor simulator built on a prototype board. Note the cigarette lighter plug used for power source. The adjustment knob is at the left, and the switch is on the ri…
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broadcasthardware has posted a new entry on: Electronic Schematic Collections On The Net
RF Sensing Alarm
RF sensing alarm is a device that would alert when it detects a continuous RF transmission that lasts more than 5 minutes. The device would have to be broadband (HF/VHF/UHF), be sensitive enough to de…
- November 22nd, 2009
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broadcasthardware has posted a new entry on: Broadcast Hardware
300W RF Power Amplifier for FM Broadcast MRF6V2300N
Here's a 300 watt singleended RF power amplifier for the FM broadcast band. This broadband FM power amplifier with simplicity and reliability is possible and compact to design and build at low cost.…
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broadcasthardware has posted a new entry on: Amplifier Circuit
Photodiode Amplifier Circuits with OPA128
The OPA128 ultra-low bias current operational amplifier achieves its 75fA maximum bias current without compromise. Using standard design techniques, serious performance trade-offs were required which…
- November 21st, 2009
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broadcasthardware has posted a new entry on: Amplifier Circuit
40-900 MHz TV Signal Amplifier
Here's a small signal amplifier circuit which covers the broad band frequencies from 40 to 900 MHz. These frequencies include TV in VHF and UHF and also the radio broadcasting frequencies in the 88 -…
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broadcasthardware has posted a new entry on: Amplifier Circuit
MAR-6 CATV Amplifier Circuit
This Cable TV amplifier design has 5 outlets. This amplifier boosts the TV cable signal with 18dB before the signal is split into 5. The design is based around a MAR-6 MMIC. This Integrated Circuit am…
- November 20th, 2009
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broadcasthardware has posted a new entry on: Amplifier Circuit
Boost Converter Circuit
The completed board may be driven by voltages between .8 and 3 Volts. While the basic design goal was ‘candle like light from a single cell’, the values used were chosen to allow safe operation fr…
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broadcasthardware has posted a new entry on: Amplifier Circuit
Voltage Boost Circuit For A Battery Operated LED Lantern
This circuit is a series connected voltage booster. It is designed around two blocking oscillators in parallel with a single inductor core in common. The oscillators are locked together by virtue of t…
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broadcasthardware has posted a new entry on: Amplifier Circuit
Simple Battery Booster Circuit
Here's a simple battery booster circuit and it can be used in any battery compartment irrespective of the number of cells. The number of batteries (n) will then be replaced by n–1 rechargeable cells…
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broadcasthardware has posted a new entry on: Amplifier Circuit
Cell Phone Antenna Booster Installation
Tired of dropped cell phone incoming calls? The cause for your dropped calls are a lack of cell phone signal. Installing a cell phone antenna booster will increase your signal strength and stop droppe…
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broadcasthardware has posted a new entry on: Amplifier Circuit
Privacy Policy
Our Commitment To Your Privacy Your privacy is important to us. To better protect your privacy we provide this notice explaining our online information practices and the choices you can make about the…
- November 14th, 2009
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broadcasthardware has posted a new entry on: Circuit Electronic
LM338 Power Supply
5A Adjustable Voltage Power Supply using LM338 Here’s a variable voltage power supply circuit using a LM338 adjustable 3 terminal regulator to supply a current of up to 5A over a variable outp…
- November 13th, 2009
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broadcasthardware has added
promisedeco to her friends list. - November 12th, 2009
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broadcasthardware has posted new updates on her multiply:
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broadcasthardware has posted a new entry on: Broadcast Hardware
i-mobile Wireless FM Transmitter with Remote Control
This handy MP3 FM Modulator turns any USB Memory Flash Drives / Memory Cards into an MP3 player. It also has the general line-in function for other portable audio devices (e.g. iPod). It is a perfec…
- October 31st, 2009
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broadcasthardware has added
aglolink to her friends list. -
broadcasthardware has posted a new entry on: Circuit Electronic
Audio Spectrum Analyzer
Audio Analyzer Mini Audio Spectrum Analyzer LM3915 The circuit has been designed to create a spectrum analyzer that will provide an analysis of a sound to determine at various frequencies, the volume…
- October 11th, 2009
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broadcasthardware has posted a new entry on: Broadcast Hardware
Two Way Radio-Microphone Connections
Are looking for internal cable connection of your rig microphone? Here is the right place of your choice. This site collects any info about microphone connections and sockects. If you have any…
- October 9th, 2009
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broadcasthardware has posted a new entry on: Detector and Sensor
Fire Alarm Using NE555
Here's a fire alarm circuit using LDR (Light Depending Resistor) as light sensor. It warns the user against fire accidents. It relies on the smoke that is produced in the event of a fire. When this sm…
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broadcasthardware has posted a new entry on: FM TV Electronics Guide
Cable-TV Amplifier with 5 Outlets
Here's the design of a cable TV distribution amplifier (CATV). This cable TV distribution amplifier has 5 outlets. This amplifier boosts the TV cable signal with 18dB before the signal is split into…
