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| Username | febb |
| Name | Alex Feb |
| Member Since | May 14, 2013 |
Now showing circuits 1-20 of 104. Sort by
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Clock LED Backup PUBLICNiMH battery backup for LEDs and wall clock by febb | updated 19 hours, 21 minutes ago |
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1.5V Power supply for clock PUBLIC1.5V Power supply for clock with 30 min backup capacitors. by febb | updated November 23, 2019 |
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Optocoupler oscillator - tester PUBLICSimple Optocoupler oscillator - tester by febb | updated October 27, 2019 |
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Simple LED FlashLight driver PUBLICby febb | updated August 10, 2019 |
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Multimeter power supply from NiMH cell PUBLICby febb | updated May 25, 2019 |
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Cuk converter for smooth negative rail PUBLICSimple Cuk converter for smooth negative rail by febb | updated May 23, 2019 |
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Rechargable Battery Tester PUBLICby febb | updated May 20, 2019 |
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Rechargable Battery Leakage Tester PUBLICby febb | updated May 19, 2019 |
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34063 booster current control USB light PUBLICby febb | updated May 15, 2019 |
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UC3845 Cuk converter PUBLICby febb | updated May 05, 2019 |
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Cuk converter - car USB charger PUBLICby febb | updated May 04, 2019 |
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Cuk Converter for portable radios powered from Ni-MH battery PUBLICEfficient low EMI DC-DC converter Cuk topology to power portable radios from Ni-MH battery by febb | updated April 28, 2019 |
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Cuk Converter for portable radios PUBLICEfficient low EMI DC-DC converter Cuk topology to power portable radios from Li-Ion (18650) battery by febb | updated April 21, 2019 |
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34063 DC-DC Step down drives N-MOSFET PUBLICLegacy MC34063 chip drives power N-MOSFET in DC-DC Step Down converter. Minimum components. by febb | updated April 15, 2019 |
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Tachometer for small DC actuator PUBLICOP 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 |
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Simple 2 transistors regulated USB LED light PUBLICSimple 2 transistors regulated switch mode boost USB LED light by febb | updated April 01, 2019 |
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OP AMP oscillator PUBLICSimple relaxation oscillator with OP AMP by febb | updated February 28, 2019 |
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Hybrid Power Supply PUBLICHybrid Power Supply from very cheap components by febb | updated February 12, 2019 |
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Bidirectional current sensor PUBLICBidirectional current sensor by febb | updated December 05, 2018 |
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Simple Watch Crystal Oscillator PUBLICSimplest Watch Crystal Oscillator on 1 transistor by febb | updated November 24, 2018 |