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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.
Switch
Battery
Lamp
7189
24 Dec 2014
2
A simple step-up transformer.
Switch
Power Source
Transformer
4438
18 Nov 2014
3
Full Wave Bridge prevents polarity mistake.
6631
20 Jul 2014
4
Sine Wave Oscillator
7275
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.
Battery
Lamp
Diode
5232
10 Jul 2014
6
Quick but unregulated split power supply.
Battery
3960
02 Jul 2014
7
Differentiator circuit
Resistor
Capacitor
Power Source
Op Amp
3978
28 Jun 2014
8
Sawtooth Wave Generator
4623
28 Jun 2014
9
Spike Generator
3666
24 Jun 2014
10
Triangle Wave Generator.
5290
22 Jun 2014
11
Square wave generator.
10457
20 Jun 2014
12
6 Volt Lamp Flasher
Battery
Transistor
Resistor
Capacitor
Lamp
5094
12 Jun 2014
1
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95544
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