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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
Switch
Battery
6700
24 Dec 2014
2
A simple step-up transformer.
Transformer
Switch
Power Source
3942
18 Nov 2014
3
Full Wave Bridge prevents polarity mistake.
6180
20 Jul 2014
4
Sine Wave Oscillator
6677
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
Diode
Battery
4671
10 Jul 2014
6
Quick but unregulated split power supply.
Battery
3448
02 Jul 2014
7
Differentiator circuit
Op Amp
Power Source
Capacitor
Resistor
3450
28 Jun 2014
8
Sawtooth Wave Generator
4104
28 Jun 2014
9
Spike Generator
3233
24 Jun 2014
10
Triangle Wave Generator.
4904
22 Jun 2014
11
Square wave generator.
9756
20 Jun 2014
12
6 Volt Lamp Flasher
Lamp
Capacitor
Battery
Resistor
Transistor
4638
12 Jun 2014
1
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