febb's Profile

Clock LED Backup PUBLIC

NiMH battery backup for LEDs and wall clock

by febb | updated 4 days, 9 hours ago

AC current indicator PUBLIC

by febb | updated May 06, 2018

Very Simple Crystal Oscillator PUBLIC

by febb | updated April 11, 2018

Heater Fan 1 control V2 PUBLIC

Added uController to control FAN heater

by febb | updated April 11, 2018

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 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 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 PUBLIC

Simple Nixie tubes about 170V power supply

by febb | updated October 17, 2017

UC3843 SEPIC converter PUBLIC

Simple DC-DC converter SEPIC topology

by febb | updated August 26, 2017

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 PUBLIC

by febb | updated August 25, 2017

34063 stepdown drives BJT NPN PUBLIC

by febb | updated August 16, 2017

34063 DC-DC Stepdown drives N-MOSFET PUBLIC

Legacy MC34063 chip drives power N-MOSFET in DC-DC Step Down converter. Minimum components.

by febb | updated August 15, 2017

UC3843 stepdown drives BJT NPN PUBLIC

by febb | updated August 14, 2017

UC3845 stepdown drives N-MOSFET PUBLIC

by febb | updated August 06, 2017

34063 Stepdown test PUBLIC

by febb | updated August 05, 2017

Flashlight Test1 PUBLIC

by febb | updated July 15, 2017

Soldering station PUBLIC

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

by febb | updated June 18, 2017

soldering-station  

Li Ion Load Balanced charger PUBLIC

Cheap OP Amp as a simple balancer for charging battery packs

by febb | updated June 09, 2017

Vacuum battery charger PUBLIC

Current limiter for charging vacuum cleaner 13 NiMH cells battery pack.

by febb | updated May 29, 2017