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  1. Photo sensor control relay circuit May 30, 2011

    Posted in Sensor, Switch circuit, relay circuit.

    No comments
  2. FM radio Wireless Microphones Circuit May 28, 2011

    Posted in RF-circuit, audio amplifier.

    No comments
  3. Stereo preamplifier circuit with TL072 May 26, 2011

    Posted in Amplifier, Sound Circuit, audio amplifier.

    4 comments
  4. 250Watts MOSFET Audio Amplifier Circuit with J162-K1058 May 22, 2011

    Posted in Amplifier, audio amplifier.

    No comments
  5. Low Voltage Car Battery Warning Circuit May 21, 2011

    Posted in Battery Charger, Sound Circuit.

    1 comment
  6. Low voltage warning beeper circuit with CA3160 May 20, 2011

    Posted in Battery Charger, Sound Circuit.

    No comments
  7. Remote Control Tester Circuit with Sound Alert May 19, 2011

    Posted in Frequency Generator, RF-circuit, Sensor, Sound Circuit.

    No comments
  8. Infrared remote control tester circuit with Radio Shack 276-137 May 17, 2011

    Posted in Detector Circuit, Frequency Generator, RF-circuit, Sensor.

    No comments
  9. Relay control with MOSFET IRF511 Circuit May 16, 2011

    Posted in Switch circuit, relay circuit.

    No comments
  10. 500W PA Audio Amplifier Apex B500 Circuit May 13, 2011

    Posted in Amplifier, audio amplifier.

    1 comment
  11. 12Volt to 24Volt DC to DC converter Circuit May 12, 2011

    Posted in Power adapters, Power converter, Power supply.

    No comments
  12. Stereo Phono Preamplifier Circuit (RIAA Filter) May 10, 2011

    Posted in Sound Circuit, audio amplifier.

    No comments
  13. PLL Stereo Decoder circuit with IC LM1800N May 9, 2011

    Posted in Sound Circuit.

    No comments
  14. Automatic turn off relay Circuit May 7, 2011

    Posted in Switch circuit, relay circuit.

    No comments
  15. Microphone Pre-Amplifier IC Circuit with LM741 May 5, 2011

    Posted in Amplifier, Sound Circuit.

    No comments
  16. 1kHz WIEN bridge oscillator circuit with TL071-NE5534-LM741 May 3, 2011

    Posted in Oscillator circuit.

    No comments
  17. 300W Bipolar Amplifier Circuit with transistor May 1, 2011

    Posted in Amplifier, audio amplifier.

    No comments