Researchers have created a simple circuit using transistors that run on the chemicals that control living processes, rather than the electrons that usual transistors use. The result is a step ...

Here is a great collection of touch switch circuits. A touch switch is an electronic device that enables us to control a circuit by simply touching a sensor. Simple touch switch circuit with 4011 – ...

You can use an ADT7461 single-channel temperature monitor, an ADG708 low-voltage, low-leakage CMOS 8-to-1 multiplexer, and three standard 2N3906 pnp transistors to ... When you select no external ...

Much simpler circuits ... simple electronics, [Kyle] threw together this auto shutoff circuit. The basic idea behind the cirucuit is to use a microcontroller as a timer controlling two transistors.

It doesn’t have to be that complicated, though, as this simple two-wire ... a power supply and decoder circuit, which sends 9 volts up the line to power the PIC sensor. The decoder is based ...

Also, the known J-and D flip-flops first needed to use an anti-glitch R-S circuit, making the design too complex. So, I tried a simple circuit using a 7402 quadruple NOR gate (see the figure).

usually built using a current sensor, a control circuit, and a pass transistor. The current sensor itself can be a simple low-value resistor; since the voltage across it is proportional to the ...