Multi-channel remote voltmeter is a device that allows remote measurement variables sinusoidal voltage from several different sources (six channels in this implementation) and submit the information on the three-digit seven-segment six indicators. Development of the device due to the need for continuous monitoring of power supply equipment located at some distance from the location of the person.
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Multi-channel remote voltmeter
Knight Rider LED circuit
This simple LED circuit makes the LED effect as in Knight Rider LED car. The chain of nine high-brightness LEDs are constantly running from left to right and from right to left. You can use red LEDs, and to attract additional attention to the front – white LEDs.
A simple dioda and transistor tester circuit
The proposed diode tester and transistor tester circuit above are very simple and quite universal. Allows you to quickly test transistors, diodes, or ping circuit.
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