Recent Posts Tagged With 'led circuit'

• LED Power Meter Using Digital Multimeter

  Posted on Friday September 18th, 2009 at 18:44 in test circuit, rf circuit, led circuit, test-measurement

  LED power Meter circuit is a simple RF detector using diodes to charge a capacitor. The voltage developed across the capacitor is indicated by a multimeter set to a low voltage range. The circuit is soldered together without the need for a PC board,...

• LED Indicator Relay Timer Circuit-9 Second

  Posted on Tuesday September 15th, 2009 at 05:59 in timer circuit, led circuit, ic555 circuit, ic4017 circuit, relay circuit, switch circuit

  This Relay Timer circuit provides a visual time 9 second delay using ten LED before control by closing a 12 VDC relay. That the reset switch has closed, IC 4017 decade counter will be reset to zero count which illuminates the LED driven from pin 3. ...