febb's Profile

Regulated LED light, no feedback PUBLIC

by febb | updated February 19, 2021

Voltage Indicator PUBLIC

by febb | updated December 20, 2020

LED Lamp charger PUBLIC

by febb | updated October 31, 2020

Safe 3A USB car charger PUBLIC

by febb | updated October 14, 2020

LED night light PUBLIC

by febb | updated June 02, 2020

Heater Safety PUBLIC

by febb | updated May 09, 2020

USB Light Test PUBLIC

by febb | updated December 30, 2019

Clock LED Backup PUBLIC

NiMH battery backup for LEDs and wall clock

by febb | updated December 16, 2019

1.5V Power supply for clock PUBLIC

1.5V Power supply for clock with 30 min backup capacitors.

by febb | updated November 23, 2019

Optocoupler oscillator - tester PUBLIC

Simple Optocoupler oscillator - tester

by febb | updated October 27, 2019

Multimeter power supply from NiMH cell PUBLIC

by febb | updated May 25, 2019

Cuk converter for smooth negative rail PUBLIC

Simple Cuk converter for smooth negative rail

by febb | updated May 23, 2019

Rechargable Battery Tester PUBLIC

by febb | updated May 20, 2019

Rechargable Battery Leakage Tester PUBLIC

by febb | updated May 19, 2019

UC3845 Cuk converter PUBLIC

by febb | updated May 05, 2019

Cuk converter - car USB charger PUBLIC

by febb | updated May 04, 2019

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 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 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 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