The popular LM317 voltage regulator IC is designed to deliver not more than 1.5 amps, however by adding an outboard current boost transistor to the circuit it becomes possible to […]
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Simple RGB LED Color Mixer Circuit using LM317 IC
The post explains a simple LM317 IC based RGB 3 watt LED color mixer circuit, which can be used for demonstrating the color mixing effects of red, blue, green colors […]
LM317 IC Tester Circuit – Sort Out Good ICs from Faulty Ones
Here is simple but handy testing circuit for LM317 adjustable voltage regulator IC. I am sure it can be used to test other similar ICs like LM117, LM158, LM358 etc. […]
4 Simple Li-Ion Battery Charger Circuits – Using LM317, NE555, LM324
The following post explains a four simple yet a safe way of charging a Li-ion battery using ordinary ICs like LM317 and NE555 which can be easily constructed at home […]
12V Battery Charger Circuits [using LM317, LM338, L200, Transistors]
In this article we will be discussing a list of simple 12V battery charger circuits which are very easy and cheap by its design yet extremely accurate with its output […]
How to Use LM317 for Making a Variable Power Supply Circuit
In this post we will elaborately discuss how to build a simple LM317 based adjustable power supply circuit using minimum number of external components. As the name suggests a variable […]