Electronics Circuit Diagram

Below schematic shows the simple design of an Automatic Telephone Conversation Recorder Circuit Board Diagram and Components Parts List.

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LED Display Panel Clock Module Circuit Board Design. This LED Display Panel Clock Module requires 9 – 15V DC power supply and 60mA max. power consumption.

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The following schematic shows the design of a Simple Smoke Sensor Circuit Board using LM1801. This circuit design utilizing two LDRs, one LED, one internal zener supply, two reference voltage outputs.

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The following schematic shows the design of a simple 5-band graphic equalizer PCB layout and circuit board diagram.

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Simple Universal UHF/VHF frequency meter circuit board and PCB Layout. This circuit design uses a 7-digit frequency meter measuring frequency from 10 Hz up to 1300 MHz.

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