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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
7208
24 Dec 2014
2
A simple step-up transformer.
Switch
Transformer
Power Source
4462
18 Nov 2014
3
Full Wave Bridge prevents polarity mistake.
6646
20 Jul 2014
4
Sine Wave Oscillator
7287
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
Diode
Lamp
5256
10 Jul 2014
6
Quick but unregulated split power supply.
Battery
3979
02 Jul 2014
7
Differentiator circuit
Resistor
Power Source
Capacitor
Op Amp
3999
28 Jun 2014
8
Sawtooth Wave Generator
4641
28 Jun 2014
9
Spike Generator
3683
24 Jun 2014
10
Triangle Wave Generator.
5303
22 Jun 2014
11
Square wave generator.
10489
20 Jun 2014
12
6 Volt Lamp Flasher
Transistor
Battery
Resistor
Capacitor
Lamp
5119
12 Jun 2014
1
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95836
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