By  Talip Kiziltepe email: talip_kililtepe@hotmail.com Here is my 220v flash light circut i do try very good working.

This circuit lets an external 12V SLA battery power a camcorder which normally has an inbuilt 7.2V battery. Such batteries can now be very difficult or expensive to obtain for earlier model camcorders. In essence, the circuit is a standard LM317 adjustable regulator with resistors R1 & R2 set to provide 7.2V (depending on the [...]

DC Power Supply 1.2 – 25V 5A Source : Reber electronic

Source: Stefan’s Electronics

Most off-the-shelf car battery chargers cannot not be left connected to the battery for long periods of time as over-charging and consequent battery damage will occur. This add-on circuit is placed in series with the battery being charged and is powered by the battery itself. In effect, the circuit uses a high-current Mosfet to control [...]

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