Free Simple Circuit Diagram
Antenna Booster Circuit This antenna signal booster works for TV receiver in UHF band (400-850MHz). This antenna booster gives around 10 to 15 dB amplification. Here is the schematic diagram of the circuit: This antenna amplifier circuit need special attention for the layout, the transistor circuits should be shielded from the input circuit (as shown with the dashed line), and […]
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This audio power amplifier is very good for your portable devices, or for your headphones amplifier. The circuit of this audio power amplifier is very simple, consist of only seven components. Here is the schematic diagram of the amplifier circuit: Low harmonic distortion give you a hi-fi power amplifier, but in a very small wattage. Depending on the LM386 variants, […]
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If you are building or troubleshooting audio circuits, both audio signal injector and audio tracer is important tools. tracing audio signal means tapping a signal at certain point, and check if the signal is exist. Here is the schematic diagram of the signal injector/tracer circuit: Tracing an audio signal can be done using an audio amplifier, but using a handheld […]
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Stepper motor is a simple way to make a motion control with high precision. A stepper motor control circuit is needed to make stepper motor works. A stepper motor controller usually use a microcontroller to make a complicated task. Some controller use stepper motor ic to simplify the circuit design. For simple task like just rotating with constant speed a […]
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