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Sam Watson
1
Three-way Switch or How To Turn a Light On or Off From Either End of A Long Hallway Regardless Of The Position Of The Other Switch.
Lamp
Battery
Switch
6832
24 Dec 2014
2
A simple step-up transformer.
Switch
Power Source
Transformer
4053
18 Nov 2014
3
Full Wave Bridge prevents polarity mistake.
6283
20 Jul 2014
4
Sine Wave Oscillator
6840
16 Jul 2014
5
Using 'bucking' batteries: The voltage of the smaller battery is subtracted from the larger battery and the positive end of the smaller battery becomes the negative end of the two. This really works.
Lamp
Battery
Diode
4811
10 Jul 2014
6
Quick but unregulated split power supply.
Battery
3583
02 Jul 2014
7
Differentiator circuit
Resistor
Power Source
Capacitor
Op Amp
3574
28 Jun 2014
8
Sawtooth Wave Generator
4239
28 Jun 2014
9
Spike Generator
3332
24 Jun 2014
10
Triangle Wave Generator.
5011
22 Jun 2014
11
Square wave generator.
9953
20 Jun 2014
12
6 Volt Lamp Flasher
Resistor
Lamp
Battery
Transistor
Capacitor
4749
12 Jun 2014
1
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