Showing posts with label VOLTAGE. Show all posts
Showing posts with label VOLTAGE. Show all posts
Friday, October 11, 2013
Circuit High Voltage Generator with HEX FET
The schematic diagram below show a circuit of high voltage generator. This circuit uses a 4049 hex inverter as an oscillator, and you can use ignition transformer from automotive engine. A fly-back transformer is possibly usable too. The 4049 will drive the IRF731 HEX FET. The Q1 must be heatsinked. Here is the schematic diagram of the circuit:
Wednesday, September 28, 2011
L200 VOLTAGE REGULATOR SOFT START MECHANISM ELECTRONIC DIAGRAM
L200 VOLTAGE REGULATOR SOFT START MECHANISM ELECTRONIC DIAGRAM
The Vo follows the voltage at pin 2 at less than 0.45 V since a voltage of more than 0.45 V cannot be produced between pins 5 and pins 2.
Constant current ic is charge capacitor C, where
ic= Vsc/R
After the time ton, the output reaches it’s nominal value
Vo-Vsc = (Ic.ton)/C
ton=C.[(Vo-0.45)/0.45].R = CVoR/0.45
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