Tag Archives: Electronic C

Your washing machine & tumble dryer on one wall outlet

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Introduction This circuit enables you to connect both your washing machine and your tumble dryer on one wall outlet, without blowing the fuse! The trick is that the washing machine only consumes full power when heating the water. During the other stages (pumping, tumbling, centrifuging) the power consumption is much… Read more »

Three channel fan speed controller for PC

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Three channel fan speed controller for PC Jos van Eijndhoven have designed a 3 channel fan motor controllerbased on PIC 16F676 microcontroller. Mcu reads temperature from sensors and outputs PWM modulated signal to each output so the speed of fan is controlled accordignly. Three on board potentiometers controls the start… Read more »

Backup Lamp light fails by Vmos

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There are a few situations when a power failure is particularly difficult to handle. Some of these circumstances occur in the bathroom. This little circuit will pay for itself many times over the first time it is used, especially if you are in the shower. Read more original source: http://www.techlib.com/files/backup.pdf

Power-On Time Delay Relay

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From : http://ourworld.compuserve.com/homepages/Bill_Bowden/ Here’s a power-on time delay relay circuit that takes advantage of the emitter/base breakdown voltage of an ordinary bi-polar transistor. The reverse connected emitter/base junction of a 2N3904 transistor is used as an 8 volt zener diode which creates a higher turn-on voltage for the Darlington connected… Read more »

simple solar panel shunt regulator by TLC271

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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 going… Read more »