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Archives for June, 2014

Comparator OP Amp

Comparator OP Amp using IC AD820, AD539,  AD827, AD538 The AD820 is a low power FET op amps can operate from supplies of 5.0 V to 36 V, or dual supplies of 2.5 V to 18 V. AD820 to accommodate input signals below ground in single supply mode. Output voltage swing extends to within 10 […]

3 way light switch wiring diagram

Switch Wiring Diagrams

Electronic Component Schematic Symbols

Electronic Component Schematic Symbols

Make Electronics Schematic Diagram 3 lines mixer

Make Electronics Schematic Diagram 3 lines mixer you can modify this circuit become more than 3 lines mixer. Just add and repeat the input parts (P=10K R=22K).

DTMF control RELAY SWITCHING circuit

DTMF control RELAY SWITCHING circuit using M8870, 4013, BC548

Temperature Sensor

Temperature Sensor Temperature Sensor electronic circuit The USB Humidity measures the relative humidity and air temperature though a hole in the middle of the housing. The device contains a calibrated precision sensor with a measurement accuracy of ±2 % relative humidity and ±0.4°C in most part of measurement range.The size of the device is about […]

3 channel microphone circuit

3 channel microphone circuit using BC550C, BC547, BC557 P1,P2,P3______5K R1,R11,R15____180K 1/4W R2,R12,R16____2M2 1/4W R3,R13,R17____750R 1/4W R4,R14,R18____1K 1/4W R5____________15K 1/4W R6____________220R 1/4W R7____________1K5 1/4W R8____________820R 1/4W R9____________150R 1/4W R10___________100K 1/4W C1,C6,C8______1µF C2,C4,C7,C9___100µF C3,C5_________220µF Q1,Q4,Q5______    BC550C Q2____________ BC547 Q3____________ BC557

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