LM317 (positive voltage regulator) and LM337 (negative voltage regulator) output series-connected power transistors powered by the 5k and 20k potentiometer binary (stereo) type if you use the + and – output of the current and voltage settings set equal can
Show some circuits and found that the output resistance of between 200 ~ 240 I use 220 the current VR20K1M R2(1K) Test all the capacitors were not received the current adjustment of the VR 20K and above can while I 1 M to test R2 (1K) best 1/2W 2SA684 2SC1384 2SA733 2SA945 With 1/2W above 2 SA684 and 2 SC1384 is to use the original 2 SA733 and 2 SA945 was considered in the current and long
Time-use issues that we would like to exchange some large insurance and reservations with a two-pole double-throw switch (DPDT) do not limited to the current maximum output of course you can also another up a terminal connector as the Open Current output.
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Published: 2008/09/07 Tags: power electronic projects, power supply circuit, power supply project
ATmega8 Motorcycle alarm circuit
Separate power supply. Signalling on mobile phone call.This function has only a few hundred euros more expensive equipment.
motorcycle into the phone by calling The digital alarm input is a normally closed contact. The analog input is deactivated when a certain resistance to +12 V is. It reacts to interruption and short-circuiting. Several alarm contacts can be connected in series. Help with mounting problems of the kind colleagues in the Honda Bol d’Or Board 🙂