The controller uses one or more ordinary silicon diodes as a sensor, and uses a cheap opamp as the amplifier. I designed this circuit to use 12V computer fans, as these are now very easy to get cheaply. These fans typically draw about 200mA when running, so a small power transistor will be fine as [...]
Contain divide this friends many you may face a problem economical. A steal the very. Today I then beg for to advise the circuit protects steal again model that interesting. It is model to touch , the system will work when , steal touch at the metal detects. When you see the circuit may like [...]
This is Dry Cell Battery Charger Circuit. That can use charger battery get that about 12 hour. When apply to power supply 9 volt the equipment that fix in the circuit use for size battery AA. If use the size C or D should devalue of Resistor RX down be 68ohm and should not lead [...]
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