Free electronic circuit design and schematic diagram
This is 12V Car Battery Charger simple circuit. This circuit is designed to solve some problems that occurs in most car battery chargers. The problem that occur in most car battery chargers is when the charger is not turned off, the battery will overcharge, the plate of the charger will destroyed and the electrolyte of the charger will lost because […]
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This is 7.5V Uninterpretable Power Supply simple circuit. This circuit was used in many applications as a battery backup for low power requirements. This circuit contains a bridge rectifier, an electrolytic capacitor, and a transformer followed by a Zener controlled series pass transistor. This circuit can generate +7.5V stable output. Here is the circuit: The stand-by battery, 7.5V, is connected […]
Read moreThis is measuring voltage video tutorial. This video shows how to measure voltage in electricity. In this video, the voltage of battery is measured using voltmeter. When the red probe is connected to positive part of battery, the result is 9.00V. When the red probe is connected to negative of part of battery, the result is -9.00. here is the […]
Read moreThis is a Kirchoff’s voltage laws video tutorial. This video describes Kirchoff’s voltage laws and how to use it. There two Kirchoff’s laws, they are Kirchoff’s voltage laws and Kirchoff’s current laws. In Kirchoff’s current laws, each node contains sum of input current is same with sum of output current. Kirchoff’s voltage laws tells each loop in the circuit, sum […]
Read moreThis is a video tutorial about current and voltage. This video describes the basic in electricity. In this video, the electricity analogous as river. The fundamental quantity in the river is how much the current flowing. The symbol of the current is I and measured in coulomb per second. Coulomb per second is given special name, the name is Amp. […]
Read moreThis video is about water analogy in Dc circuit. In this video a DC circuit is compared with the flow of water. The DC voltage source as pressure, so its forcing flow of electron to the circuit. The flow of electron as water flow in the water analogy. Bulb lamp as turbine in the water analogy. When the voltage is […]
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This is a circuit of Wideband SWR Meter. This circuit is used as a test instrument. To use this circuit, connect the meter, take the necessary readings, then disconnect. The meter should not be left in the line permanently because it draws up 3/4 of the transmitted power, and a similar part of a received signal. This circuit uses Three […]
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