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Como hacer el Transformador Para "Joule Thief" (ladrón de Julios)

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Fabricación de circuitos Impresos SIN uso de calor

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Solder on Aluminum

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METRONOME (electronic) schematic with time signature LEDs

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AC eddy current Induction Motor (with reverse)

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Fast Reflexes Skill Game (2 player)

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IR (infrared) remote control toggle switch / sequencer

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LED as PHOTOSENSOR ?

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512 color LED flasher (random)

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1.5v (AA cell) to 50v DC-DC Voltage Booster

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Resistor Color Code made easy

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Burping Piggybank

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Lissajous Figures on 8X8 LED matrix

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Mini - Oscilloscope (DIY)

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Accurate 1 Hz from AC mains

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7 Segment display encoder (with diodes)

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Tic-Tac-Toe Part-2 ( 3 in a row )

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Tic-Tac-Toe Part-1 ( 3 in a row )

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USB Traffic Light + PCBoard

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Phantom Power Blocker

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Polarity Inverter (charge pump)

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Printed Circuit Board Sponge Etching method

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PWM power led dimmer

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DIY Logic Gates

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Guitar Overdrive + Sub-octaver

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UV LightSaber Nightlight

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DC Power Supply (50w) using Halogen Lamp Transformer (electronic)

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10 Year LED flasher + PC-board

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Heatless (cold) Toner Transfer (for PCB)

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UHF Remote Control receiver

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UHF Remote Control Transmitter

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VHF-UHF Sniffer circuit

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DC-DC Voltage Doubler - Simplest possible circuit.

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Bargraph Display Digital Clock

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Ambient Light Powered LED flasher

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Led Chaser circuit ( single chip )

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Brushless DC electric Motor ( Hall sensor controlled )

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Magnetic Pendulum ( Hall sensor controlled )

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Clip indicator circuit for ANY power amplifier

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Refrigerator Open Door Alarm circuit

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8 LED CUBE ( random flash - NO microcontroller )

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10 Year Led Flasher ( version 2 with boost converter )

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Touch Sensitive Toggle Switch circuit

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RGB Led Color mixer - Pulse Width Modulation ( PWM )

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10 Year Led Flasher

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Touch Sensitive Switch with Xnor 4077 cmos gate

02:36

Electronic Dice circuit

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FET proximity & motion sense

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JouleThief Transformer - how to make - DIY