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…
51 Search results
For the term "transistor 2n222 con ldr".
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…
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…
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…
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…
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…
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…
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…
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…
Super Turbo Battery Charger
A ferrite tube based Lasersaber SJR 3.0, with a very different function. See laserhacker.com for the circuit. With the knowledge that the SJR 3.0 powers up different sorts of light bulbs, I wondered if…