febb's Profile

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

PSU with linear regulator 1 PUBLIC

Simple power supply with linear regulator and lowest voltage drop

by febb | updated April 06, 2017

Op Amp Latch & PWM Oscillator PUBLIC

2 state latch and square wave generator, using OP AMP.

by febb | updated March 27, 2017

Multimeter 9V power from NiMH battery PUBLIC

Simple DC converter and charger to use NiMH battery with 9V multimeter. Auto shutdown current < 5 uA.

by febb | updated March 02, 2017

Low voltage DC booster with MOSFETs 2 PUBLIC

Low voltage driver for power LED using MOSFETs from NiMH cell.

by febb | updated February 15, 2017

Step Down Charger Test PUBLIC

Simple effective step down DC-DC converter for charging NiMH batteries from USB

by febb | updated February 15, 2017

Low voltage StepUP DC Converter with MOSFET PUBLIC

Drive power MOSFET switch to work from single battery cell. Useful to drive powerful LED flashlight from single battery cell.

by febb | updated February 07, 2017

BJT low voltage latch PUBLIC

Tactile switch for 1 NiMH battery LED torch

by febb | updated January 27, 2017

Mosfets Flip-flop switch PUBLIC

Simple latch with 2 mosfets

by febb | updated January 22, 2017

12V LED strip driver from USB power PUBLIC

12V LED strip driver from USB power using small MOSFET.

by febb | updated November 20, 2016

EL wire inverter test PUBLIC

Simple inverter for EL wire development test.

by febb | updated November 17, 2016

Electronic Load PUBLIC

Analog electronic DC Load

by febb | updated July 11, 2016

LED strip stepup driver PUBLIC

Simple LED strip 12V step up driver from USB or Li Ion battery

by febb | updated June 08, 2016

LED strip inverter PUBLIC

Simple LED strip 12V driver from USB or any voltage 1-50V

by febb | updated June 07, 2016

1.2V Battery Clock backup PUBLIC

by febb | updated May 05, 2016

Simple SMPS PUBLIC

Few watts, no galvanic isolation.

by febb | updated February 25, 2016

LED Fan termostat PUBLIC

Analog thermostat using transistor for high power LED cooling fun.

by febb | updated February 06, 2016

High Power LED dimmer PUBLIC

Dimmer for high power LED with SMPS.

by febb | updated January 31, 2016

Night Light - 2 PUBLIC

by febb | updated January 06, 2016