Author Archives: Dino

About Dino

Self taught electronics and hardware hacker.

Three Transistor Voltage Detector…

Ahh yet another transistor project!! Well, this will be the last one for a while I promise. 🙂 This is an amplifier of sorts. In fact a viewer of the video posted below with the screen name MonkeyFCoconut summed it … Continue reading

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JFET Audio Preamp with Piezo Guitar Pickup

I’ve been on a transistor theme here lately and there’s one more I’d like to cover, the JFET. JFET stands for Junction Field Effect Transistor. These transistors are well suited for high impedance inputs and since a Piezo electric device … Continue reading

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Simple Transistor Tester

This is basically a high gain amplifier with feedback that causes the LED to light and flash at a rate determined by the 10u and 330k resistor. Remove one of the transistors and insert the unknown transistor. When the transistors … Continue reading

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Hurricane Evacuation Kit

Hurricane Irene is heading up the coast towards North Carolina and may be making land fall fairly close to where I live, so I thought it would be a good idea to get an evacuation kit together. I also realized … Continue reading

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The push on push off transistor switch

You’re probably familiar with single button on/off switches. Most of the ones you see now on devices are IC logic switches but there was a time when these types of switches used transistors only. I can remember when the first … Continue reading

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