Username febb
Name Alex Feb
Member Since May 14, 2013

febb's Public Circuits:

Now showing circuits 1-20 of 103. Sort by

Optocoupler oscillator - tester

Optocoupler oscillator - tester PUBLIC

Simple Optocoupler oscillator - tester

by febb | updated October 27, 2019

Simple LED FlashLight driver

Simple LED FlashLight driver PUBLIC

by febb | updated August 10, 2019

Multimeter power supply from NiMH cell

Multimeter power supply from NiMH cell PUBLIC

by febb | updated May 25, 2019

Cuk converter for smooth negative rail

Cuk converter for smooth negative rail PUBLIC

Simple Cuk converter for smooth negative rail

by febb | updated May 23, 2019

Rechargable Battery Tester

Rechargable Battery Tester PUBLIC

by febb | updated May 20, 2019

Rechargable Battery Leakage Tester

Rechargable Battery Leakage Tester PUBLIC

by febb | updated May 19, 2019

34063 booster current control USB light

34063 booster current control USB light PUBLIC

by febb | updated May 15, 2019

UC3845 Cuk converter

UC3845 Cuk converter PUBLIC

by febb | updated May 05, 2019

Cuk converter - car USB charger

Cuk converter - car USB charger PUBLIC

by febb | updated May 04, 2019

Cuk Converter for portable radios powered from Ni-MH battery

Cuk Converter for portable radios powered from Ni-MH battery PUBLIC

Efficient low EMI DC-DC converter Cuk topology to power portable radios from Ni-MH battery

by febb | updated April 28, 2019

Cuk Converter for portable radios

Cuk Converter for portable radios PUBLIC

Efficient low EMI DC-DC converter Cuk topology to power portable radios from Li-Ion (18650) battery

by febb | updated April 21, 2019

34063 DC-DC Step down drives N-MOSFET

34063 DC-DC Step down drives N-MOSFET PUBLIC

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

by febb | updated April 15, 2019

Tachometer for small DC actuator

Tachometer for small DC actuator PUBLIC

OP AMP creates shmodt trigger to catch current pulses from brushed DC motor. Then pulses converted to frequency dependent voltage output.

by febb | updated April 15, 2019

Simple 2 transistors regulated USB LED light

Simple 2 transistors regulated USB LED light PUBLIC

Simple 2 transistors regulated switch mode boost USB LED light

by febb | updated April 01, 2019

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

Clock LED Backup

Clock LED Backup PUBLIC

NiMH battery backup for LEDs and wall clock

by febb | updated May 19, 2018

AC current indicator

AC current indicator PUBLIC

by febb | updated May 06, 2018