IC 7812, 7805 Current Booster Circuit

Current in all 78XX ICs such as 7812, 7805, 7824 etc is internally restricted to 1 amp only. In this post we learn how to boost current from these ICs using an outboard transistor circuit with a 78XX circuit. There are several options of pulling extra current from a 78XX type voltage regulator lC than […]

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220V Light Dimmer Circuit using Push Button Control

The following circuit can be effortlessly used for dimming a 220V or 120V mains operated lamp or fan using a single push button operation. Referring to the given figure, the IC  NB7332 is an advanced frequency generator which changes its high frequency pulse range to alter the triac’s switching pattern such that for lower power […]

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Simple 24V 20 Amp Adjustable Power Supply Circuit

Here we will see how we can make a simple 20 amp 24V adjustable power supply circuit using an LM317 IC and  afew 2N3055 transistors configured in their emitter follower mode. This circuit is quite popular among vehicles or busses in which the batteries offer 24V including different things within the electrical circuit where 12V […]

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