Username febb
Name Alex Feb
Member Since May 14, 2013

febb's Public Circuits:

Now showing circuits 21-40 of 108. Sort by

OP AMP oscillator

OP AMP oscillator PUBLIC

Simple relaxation oscillator with OP AMP

by febb | updated February 28, 2019

Hybrid Power Supply

Hybrid Power Supply PUBLIC

Hybrid Power Supply from very cheap components

by febb | updated February 12, 2019

power-supply  

Bidirectional current sensor

Bidirectional current sensor PUBLIC

Bidirectional current sensor

by febb | updated December 05, 2018

Simple Watch Crystal Oscillator

Simple Watch Crystal Oscillator PUBLIC

Simplest Watch Crystal Oscillator on 1 transistor

by febb | updated November 24, 2018

AC current indicator

AC current indicator PUBLIC

by febb | updated May 06, 2018

Very Simple Crystal Oscillator

Very Simple Crystal Oscillator PUBLIC

by febb | updated April 11, 2018

Heater Fan 1 control V2

Heater Fan 1 control V2 PUBLIC

Added uController to control FAN heater

by febb | updated April 11, 2018

Minimal UC3845 Power Supply

Minimal UC3845 Power Supply PUBLIC

Try to design minimum components UC3845 switch mode power supply

by febb | updated February 03, 2018

IR2153 regulated power supply

IR2153 regulated power supply PUBLIC

Frequency controlled IR2153 oscillator allows to build very effective half-bridge regulated switch mode power supply.

by febb | updated December 08, 2017

Voltage control with hysteresis

Voltage control with hysteresis PUBLIC

Simple control loop for IR2153 based switch mode power supply. Hysteresis is needed to turn completely ON and OFF IC oscillator. I could not find better way.

by febb | updated December 04, 2017

Nixie tubes voltage supply

Nixie tubes voltage supply PUBLIC

Simple Nixie tubes about 170V power supply

by febb | updated October 17, 2017

UC3843 SEPIC converter

UC3843 SEPIC converter PUBLIC

Simple DC-DC converter SEPIC topology

by febb | updated August 26, 2017

34063 Car Charger improvement

34063 Car Charger improvement PUBLIC

Adding simple diode D2 in switch collector circuit helps to reduce by 50% chip power dissipation and to increase substantially output current.

by febb | updated August 26, 2017

UC3843 stepdown with transformer

UC3843 stepdown with transformer PUBLIC

by febb | updated August 25, 2017

34063 stepdown drives BJT NPN

34063 stepdown drives BJT NPN PUBLIC

by febb | updated August 16, 2017

UC3843 stepdown drives BJT NPN

UC3843 stepdown drives BJT NPN PUBLIC

by febb | updated August 14, 2017

UC3845 stepdown drives N-MOSFET

UC3845 stepdown drives N-MOSFET PUBLIC

by febb | updated August 06, 2017

34063 Stepdown test

34063 Stepdown test PUBLIC

by febb | updated August 05, 2017

Flashlight Test1

Flashlight Test1 PUBLIC

by febb | updated July 15, 2017

Soldering station

Soldering station PUBLIC

Simple regulated Soldering Iron station. Supports wide output range: 40-300V.

by febb | updated June 18, 2017

soldering-station