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1  home : Infrared circuits for remote control
2  home : Simple circuits. Multipleled flasher. Geomagnetic field detector. Reverse bias oscillator. Seismic detector. Electronic attenuator. Telephone line monitor.
3  home : A frequency meter metal detector. We have designed the metal detector, the principle of operation which one differs from the classic schemes (BFO, transmit-receive known as "two-boxes&q ...
4  home : Touch Switch ON/OFF 555
5  home : Touch Switch Control
6  home : Electronic Switch with Delay Time For Lamps
7  home : 8 Relay module
8  home : Air Ionizer (Negative ion Generator). When in atmosphere exists accumulation of negative ions, it has been proved medical, that the human organism reacts favourably. Opposite happens when ex ...
9  home : SamClock Digital Clock
10  home : Voltage window switch is in practice the basic lower window limit of this circuit is roughly 3V and the upper limit is 9V.
11  home : Electronic On/Off Touch Switch Touch Button
12  home : Electronic selection for 8 sourses with 2 push buttton. Digital Up/Down Selector
13  home : Electronic selector for 8 sources. In each entrance a LED which may be independent, except if switches with led are used.
14  home : Electronic selector for 10 sources with Display 7 segment
15  home : Over and under voltage switch with relay
16  home : Signal and Tone Activated Relay Switch. Sensitive switch that corresponds in AC signals of input, for signals above 5mV.
17  home : Temperature window switch
18  home : Collection of three Clock Generators using crystal for basic production of oscillations
19  home : Light sensitive and differential temperature switch that activates when the sensed quantities go above or below pre-set values
20  home : Electronic Touch Dimmer. With this circuit we can change the brightness of lamp with a only key of touch.

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