Minnie Low-Voltage Cutoff Circuit Test
Developing and testing the Minnie LiPo Low Voltage Cutoff circuit. Schematic at the end 5:14. NOTE: The S Weir mods make the circuit work better. Use a 2n7000 mini-mosfet instead of the BC337 and…
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TROS — “motor” II
simplified the “TROS – motor I” version by elimination of the ferrite core; now transistor is oscillating by two coils on stator only — the trigger coil to open transistor, the power coil to run the rotor; very similar setup has Bedini, but this one d…
Bottle Cap Wireless – Simple system
Running with the idea of simple implementations for wireless electricity – here is Bottle Cap Wireless. A normally thrown away water bottle cap is used as the basis for the system. The transistor sits…
Joule Thief Power Tube
Tinsel Koala (TK) at overunity.com tossed out an idea to have a JT circuit using a battery as the core. I thought this to be a brilliant idea. It probably still is…however, I have…
Basic Electronic Pulse Motor
This is a very simple basic “electronic” pulse motor. The drive circuit consists of two coils of wire, an NPN transistor, and a power source—no other parts. A magnet spins between the two air…
1 Solar cell powered Snake Egg Bedini
This is the one magnet Bedini (‘snake egg’) running on one small solar cell. The transistor in the Bedini circuit was changed to a small MPSA06 from a TIP3055. An oscilloscope is used to…
TKLabs Replication: The "teslatronix" SSTC aka Slayer Exciter
An interesting effect is demonstrated near the end of the video, before the still shots. But is it really a Tesla coil? I have some problems with including this variant in with real Tesla…
Audio from a tiny Tesla tower – Walgreen AT
Speakers up !!! It’s dainty, it’s a pill bottle ‘Walgreen’ Tesla tower, running on 6V and producing audio ! Transistor used is a KN2222A, resistor 1K. Audio connections are straight from the earphone output…
Electric OU: Supplement: Driving a MOSFET by LOWERING SOURCE VOLTAGE Part 1
Usually we think of turning on a MOSFET by raising its Gate voltage to 10 or 12 volts above the negative rail/source voltage. But what if the Gate is pinned to circuit ground or…
1.2V Retro Chip Oscillator
Using an old microchip, it’s possible to build a simple low voltage oscillator. In this case, i’m using an LM339N, a Quad Comparator. Looking at the datasheet, quite often an equivalent circuit diagram will…