Circuit Project Electronic

Solar panel voltage regulator by LM358 , TIP142
Monday, February 15th, 2010

Here is the schematic diagram of my regulator. You may want to print it out, and then go on reading. This regulator is designed for 12V systems employing panels of up to 7A total current, and loads of not over 20A. It can be easily modified for greater currents. [....]
Link : http://ludens.cl/Electron/solarreg/Solarr%7E1.htm

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simple solar panel shunt regulator by TLC271
Saturday, August 15th, 2009

A simple solar panel regulator by TLC271
Solar panel regulators come in many flavors. The plainest flavor is the simple on-off type shunt regulator. It has the advantage of simplicity, extremely small power dissipation, low cost, high reliability, but in exchange for these advantages one has to accept that the voltage on the battery is always [...]

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100 Seconds Duration On Switch with Touch Control by 555
Friday, August 14th, 2009

This is a touch control switch which keeps the circuit on about 100 seconds after touching the plate connected to the 2 numbered pin. At the end of this time duration, relay releases and the circuit gets to off position.
The impedance of the trigger input of the 555 timer IC is very high and the [...]

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