Free Simple Circuit Diagram
This is a Portable light-level meter circuit with five-decade dynamic range. This uses a single cell battery as the power supply. To calibrate this circuit, use an appropriate illumination, then adjust R2 so that the output equals the reference. To make this circuit give output meter follows standard light meter, adjust R2 and R6. Maybe there is an error at […]
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A circuit of low-power switching regulator is shown in the schematic diagram below. This circuit can give output voltage of 5V from 9-V source. The efficiency of this circuit is 80% and the output capability of this circuit is 50-mA. This circuit is equipped with short circuit protection. Here is the schematic diagram:
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Video switch is required to mux/multiplex several video sources, enable multiple camera to be displayed subsequently on a single monitor. This multiplexing could significantly reduce the cost and the space for the monitor. High off isolation means that the signal path from input to output will be completely disconnected, ensuring there will be no signal leakage and cross-talk between channels. […]
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This is a battery tester circuit.This circuit is used to indicate whether the level of a battery voltage is normal, under-voltage, or over-voltage, very useful to make sure an electrical system will works properly. This circuit displays three classes of voltage level condition: high, low and normal. This circuit defines high level voltage if the voltage is more than 15 […]
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