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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.
Battery
Switch
Lamp
7407
24 Dec 2014
2
A simple step-up transformer.
Power Source
Switch
Transformer
4688
18 Nov 2014
3
Full Wave Bridge prevents polarity mistake.
6816
20 Jul 2014
4
Sine Wave Oscillator
7468
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
5457
10 Jul 2014
6
Quick but unregulated split power supply.
Battery
4168
02 Jul 2014
7
Differentiator circuit
Resistor
Capacitor
Power Source
Op Amp
4213
28 Jun 2014
8
Sawtooth Wave Generator
4849
28 Jun 2014
9
Spike Generator
3847
24 Jun 2014
10
Triangle Wave Generator.
5472
22 Jun 2014
11
Square wave generator.
10732
20 Jun 2014
12
6 Volt Lamp Flasher
Resistor
Capacitor
Battery
Transistor
Lamp
5342
12 Jun 2014
1
2
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98703
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