Capacitor charge and discharge periods is usually calculated through an RC constant called tau, expressed as the product of R and C, where C is the capacitance and R is […]
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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 […]
Op Amp Battery Charger Circuits with Auto Cut Off
The post discusses a two op amp IC 741 and LM358 based auto cut off battery charger circuits which are not only accurate with its features but also allows a […]
18V Cordless Drill Battery Charger Circuit
In this post we learn how to build and use a 18V battery charger circuit for a cordless drill machine. The idea was requested by Mr. Chibuzo. Technical Specifications Here […]
How to Set IC 741 for Auto Cut-oFF
The post explains how to set or adjust an opamp 741 IC based battery charger circuit for implementing an automatic cut-off for the connected battery once it reaches the full-charge […]
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 […]