DC to AC Inverter

DC to AC inverter is used to convert DC voltage source to an AC voltage source. DC AC inverter circuit works by switching the DC voltage source to make an alternating current  that flow to a transformer. Here is an example of  dc ac inverter schematic: This power inverter could generate 120 Watts power. A 15 fuse (as seen in […]

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12V Neon Lamp Circuit

Neon lamp or tube lamp need high voltage to trigger the ionization of the gas inside the tube. After the ionization occurs, the voltage drops around 40 volts to maintain the current. To drive a neon lamp (fluorescent lamp) using 12 volts battery, we need to convert the DC voltage to high AC voltage. High voltage is needed to trigger […]

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Inductance Meter Adapter Circuit, Turns Your Digital Voltmeter to Inductance Meter

Measuring inductance is important in making your hand-made inductors, especially when you do-it-yourself (DIY) your coil winding. An inductance meter adapter circuit would be helpful since you can measure inductance using your general purpose digital voltmeter (DVM). This circuit cost much cheaper compared to already made inductance meter instrument. Here is the scehamtic diagram of the circuit: The circuit is […]

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Variable Power Supply 1.2-55 Volt, Uses Switching Technology for High Efficiency

Designing wide range variable power supply using linear regulator is easy, but suffer terrible efficiency when it should regulate 60 Volt constant source  down to 5 Volt or lower, the efficiency would be 5/60 or 8.33% at maximum effort, really bad. Using switching technology, the efficiency can be kept around 70% , and can be higher for the lower input-output […]

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