February – 2011 – Free Electronic Circuit Schematics

Skip to content

Simple Radio Control Circuit with SCR BRY35 February 28, 2011
Posted in RF-circuit, Switch circuit, frequency amplifier.
No comments
Time Domain Reflectometer(TDR) Circuit with 74AC14 February 26, 2011
Posted in Frequency Generator, Oscillator circuit.
No comments
100Hz Square Wave Generator Circuit February 25, 2011
Posted in Oscillator circuit, frequency amplifier.
No comments
Infrared emitter & detector circuit with IC 74LS14 February 23, 2011
Posted in LED Circuit, Sensor.
No comments
Proximity Detector & Alarm Circuit February 21, 2011
Posted in Alarm circuit, Sensor.
No comments
Frequency comparison circuit with LED February 19, 2011
Posted in frequency amplifier.
No comments
Fluid Level Sensor Circuit February 17, 2011
Posted in Alarm circuit, Detector Circuit, Sensor.
No comments
Simple Light and Dark Activated Swicth Circuit with 2N2222 February 15, 2011
Posted in Light Circuit, Sensor, relay circuit.
1 comment
Light Sensor Alarm circuit with NE555 February 14, 2011
Posted in Alarm circuit, Sensor, Sound Circuit.
No comments
60Hz Noise Fillers Adjustable Circuit and PCB Parts Assembly February 11, 2011
Posted in Amplifier, frequency amplifier.
No comments
Intelligent Wire Loop Alarm Circuit With IC February 10, 2011
Posted in Alarm circuit, Security circuit, Sound Circuit.
No comments
Audio light modulation system circuit February 8, 2011
Posted in Light Circuit, Sound Circuit.
No comments
Simple Surround Sound Decoder Circuit with LM741 op-amp February 7, 2011
Posted in Amplifier, Sound Circuit, audio amplifier.
No comments
Pulse Timer Control Relay Circuit with IC555 February 5, 2011
Posted in Switch circuit, Timer circuit.
1 comment
Seismic detector circuit with piezo February 3, 2011
Posted in Detector Circuit.
1 comment
Digital Remote Thermometer circuit with LM35 February 1, 2011
Posted in Temperature Circuit.
2 comments