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 ...

This simple scheme is based on the circuit shown below (Figure 1) in my recent article [1]. Figure 1 Using common transistor optocoupler to achieve a tube-like sound. It is known that the main feature ...

A typical sensor design consists of an inductor integrated into an oscillator, so that entry of metal into the magnetic field of the inductor changes the frequency of oscillation. Figure 1 shows a ...

Using the simple circuit shown in ... This produces current in the left transistor of U1 approximately equal to: With the values shown, this circuit will limit +12-V load current to approximately ...

But designers without access to one can create a simple circuit ... curves. The circuit can also be computer-driven, with software displaying and recording the curves. Using these curves ...