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High Quality Electronic Circuits for Hobbies.
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Recent Posts
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 right. The red indicator LED is in the middle. Only ...
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 quality PCBs quickly and efficiently, particularly...
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 in one tester can be used for : audit AF/LF signa...
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 sink temperature and fan status. This projects u...
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 battery or a vehicle with a 12V power supply system. T...
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, the printed circuit. Serial element to the cooling b...
