Metal Detector Circuits

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Privacy in parallel telephone line
Long-Duration Time Delay
Video Line Bar Generator Circuit
7 SEGMENT DISPLAY COUNTER / INCOMING PERSON COUNTER
150mW Crystal AM Transmitter PCB
Easy LED Photo Sensor Circuit With LM1458
Build an Servo Scales
Simple Calling Bell Using an Intercom
Build your own PC interface
TRANSISTOR MOTOR CONTROLLER
Current mirror
SING AROUND COUNTER CONTROL
20W + 20W stereo amplifier circuit diagram



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