The post presents a simple transformerless 1.5V DC power supply circuit which can be used for powering wall clocks directly from mains, and also keep a stand by back-up cell fully charged for enabling an uninterrupted operation of the clock even during mains failures. The idea was requested by Cheekin Warning: This circuit is not […]
Power Supply Circuits
1.25V to 120V Mains Adjustable Voltage Regulator Circuit Diagram
The TL783 is a variable three lead mains voltage regulator chip having an output range of 1.25 V to 125 V and a DMOS output transistor which is able to handle in excess of 700 mA current. High Voltage Specification It is specifically configured internally for working with high-voltage applications where ordinary bipolar voltage regulators […]
0-60V LM317HV Variable Power Supply Circuit Diagram
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 […]
0-40V Adjustable Power Supply Circuit Diagram
This multipurpose general purpose supply generates as much as 2.5 amps from zero to 20 volts or up to 1.25 amps from 0-40 volts. Current limiting is variable within the entire range for either output options. By Trupti Patil Power Supply Main Specifications: AN IDEAL POWER SUPPLY must provide a voltage that is variable within […]
0-300V Adjustable Transformerless Power Supply Circuit Diagram
This simple MOSFET controlled transformerless power supply circuit can be used for delivering a continuously variable 0 to 300V DC output and a current control from 100 mA to 1 Amp. To protect against my high voltage research projects from going up in smoke permanently, I developed an easy circuit which is able to render […]
IC 723 Voltage Regulator – Working, Application Circuit
In this post I have explained the main electrical features, pinout specifications, datasheet, and application circuit of the IC 723. The IC 723 is a general purpose, extremely versatile voltage regulator IC, which can be used for making various types of regulated power supplies such as: Main Features ABSOLUTE MAXIMUM RATINGS Pinout Functions Pin 1 […]