Home » LM317 Circuits

Universal Battery Charger Circuit with Fixed Resistors

This universal automatic battery charger circuit is extremely versatile with its functioning and can be adapted for all types of battery charging and even for solar charge controller application. Universal Battery Charger Main Features A universal battery charger circuit must have the following main features included in it:1) Automatic battery full charge cut-off, and automatic … Read moreUniversal Battery Charger Circuit with Fixed Resistors

Single LM317 based MPPT Simulator Circuit

To make this simple MPPT circuit we first modify a standard LM317 power supply circuit into a buck converter then configure it with a solar panel for implementing an MPPT function. Modifying a LM317 Power Supply into an MPPT Solar Optimizer In our previous article we learned how a standard LM317 power supply could be … Read moreSingle LM317 based MPPT Simulator Circuit

LM317 Variable Switch Mode Power Supply (SMPS)

So far in this website we have studied LM317 based linear power supply circuits, here we will learn how an LM317 can be executed as a variable switch mode power or SMPS with zero loss. LM317 as Linear Regulator We all know that an LM317 IC is internally designed to work as a linear voltage … Read moreLM317 Variable Switch Mode Power Supply (SMPS)

0-60V LM317HV Variable Power Supply Circuit

The high voltage LM317HV series of ICs will allow to go beyond the traditional voltage limits of an LM317 IC and enable controlling supplies that may be as high as 60V. 0-60V Regulation with a Single IC LM317 Therefore now you can build a universal 0-60V regulated power supply circuit loaded with all the essential … Read more0-60V LM317HV Variable Power Supply Circuit

LM317 with Outboard Current Boost Circuit

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 upgrade the regulator circuit to handle much higher currents, and upto any desired levels. You might have already come across the 78XX fixed voltage regulator … Read moreLM317 with Outboard Current Boost Circuit

Simple Power Bank Circuit

The article presents a handful of assorted power bank circuits using 1.5V cell and 3.7V Li-ion cell which can be built by any individual for their personal emergency cellphone charging functionality. The idea was requested by Mr. Irfan What is a Power Bank Power bank modules have gained significant popularity today due to their portability … Read moreSimple Power Bank Circuit

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