This Design Idea describes a versatile test circuit for zener diodes after yet another misread zener diode had infiltrated the ranks of 1N4148 diodes assembled on a pc board. As a bonus, the circuit ...

The DC MOTOR SPEED CONTROL circuit is primarily a 555 IC based PWM circuit developed to get variable voltage over constant voltage.

In this paper, through calculation and simulation, under the condition that the integral value of square and time of test current is equivalent to the value required by technical specification, the ...

This simple circuit provides better than 1% accuracy in optically coupling a DC voltage signal. To compensate for the non-linearity of the optical isolator, an identical device is connected in the ...

This paper proposes a simple and fast fault diagnosis strategy for bidirectional isolated dual-active-bridge dc-dc converter with the extended-phase-shift control to improve reliability. The fault ...

The circuit uses the ubiquitous LM431 shunt regulator to implement a second-order Sallen-Key low pass filter together with a level shifter.

1. The optocoupler as a current source provides drive to a MOSFET gate with a voltage lower than the threshold voltage; R3 is the internal resistance of the test pulse generator. A simple ...

The sit-to-stand test takes just 30 seconds to complete, but its results can provide profound insights into your health.