Username febb
Name Alex Feb
Member Since May 14, 2013

febb's Public Circuits:

Now showing circuits 81-100 of 103. Sort by

Car DC converter

Car DC converter PUBLIC

Simple automotive 12V to 5V (USB) DC-DC converter.

by febb | updated September 01, 2014

Watch1

Watch1 PUBLIC

by febb | updated July 20, 2014

Op Amp Oscillator

Op Amp Oscillator PUBLIC

by febb | updated May 09, 2014

USB power backup controller

USB power backup controller PUBLIC

USB supply voltage control and backup using NiMh rechargeable battery.

by febb | updated April 22, 2014

5v-booster   pic12   power-supply   usb  

1$ charge controller

1$ charge controller PUBLIC

Low cost general purpose charge controller

by febb | updated April 21, 2014

USB power backup supply

USB power backup supply PUBLIC

USB switch mode power supply and backup controller with 1 AAA rechargeable battery

by febb | updated April 15, 2014

pic12   power-supply   usb  

AC Power Solid State Switch

AC Power Solid State Switch PUBLIC

AC power switch with push button, transistor latch and MOSFET

by febb | updated April 15, 2014

ac-switch   mosfet  

AC power relay switch

AC power relay switch PUBLIC

AC Power On/Off button switch with relay and bistable transistor latch. Minimum power consumption. Start with Off state.

by febb | updated March 18, 2014

power-switch   relay   switch  

AC Motor Control - Test

AC Motor Control - Test PUBLIC

by febb | updated March 03, 2014

555 Timer PWM

555 Timer PWM PUBLIC

Standart schematic for 555 chip for PWM generator.

by febb | updated March 02, 2014

555   timer  

AAA battery LED flashlight driver

AAA battery LED flashlight driver PUBLIC

Based on "joule thieft" oscillator circuit starts when load connected and maintains optimal current automatically. Max economy and simplicity. Idle current < 1uA!

by febb | updated March 02, 2014

Use 220V soldering iron with 110 V AC

Use 220V soldering iron with 110 V AC PUBLIC

Simple 110V AC to 220V DC converter to power 220V soldering iron without transformer. Boost and normal mode switch.

by febb | updated January 19, 2014

5V Step Up DC converter

5V Step Up DC converter PUBLIC

Standart schematic for boost converter using NCP1400ASN50T1G chip.

by febb | updated January 19, 2014

9V Step Up Converter hack

9V Step Up Converter hack PUBLIC

NCP1400ASN50T1G chip outputs fixed 5V. To make 9V voltage is pumped to double. Current sensor added to shutdown chip when no load.

by febb | updated January 19, 2014

USB NiMH AAA charge controller

USB NiMH AAA charge controller PUBLIC

by febb | updated November 04, 2013

AC converter - simple

AC converter - simple PUBLIC

by febb | updated September 12, 2013

PWM oscillator

PWM oscillator PUBLIC

by febb | updated September 08, 2013

AC step down converter 2

AC step down converter 2 PUBLIC

by febb | updated September 07, 2013

Low Voltage transistor in high voltage current amplifier

Low Voltage transistor in high voltage current amplifier PUBLIC

by febb | updated July 24, 2013

LED flashlight - 2

LED flashlight - 2 PUBLIC

by febb | updated July 20, 2013