To use the circuit as a variable medium-voltage power supply, replace the device under test with the network in Figure 1b. Adjusting the potentiometer varies the voltage at point E 2 from 22 to 120V.

The reference frequency in this circuit drives the input of an exclusive-OR gate (XOR gate U2) as well as the input to a delay circuit. Consisting of R1, C1, and comparator U1, the delay circuit ...

Simple Circuit Turns PWM Into A Digitally Adjustable Precision Reference Feb. 10, 2012 The circuit uses the ubiquitous LM431 shunt regulator to implement a second-order Sallen-Key low pass filter ...

Roll Your Own Simple Tube Tester. 5 Comments . by: Al Williams. July 8, 2023. Title: Copy. Short Link: ... He made a simple test rig to test tubes at DC and one operating point.

This paper summarizes the system composition and working principle of 500kV mechanical DC circuit breaker applied in Zhangbei flexible DC power grid demonstration project. As an important part of DC ...

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 ...