The simple Diode and LED Tester presented here costs under £5 to build ... The unit can also be used for basic diode tests on bipolar transistors, ... Circuit Operation ...

The circuit is simple enough: it uses a capacitor, a resistor, and a pair of diodes (one of them a zener diode). He uses this basic circuit to drive simple regulators with input and output filter ...

Figure 3 Two LED drivers operating in series or parallel let you boost zener voltage or current. Figure 4 shows an assembled zener-diode-tester circuit. The zener diode under test is On ...

Learn how to use a Zener diode, a series resistor, and a load resistor to create a stable and precise output voltage from a power supply, using basic formulas and components.

We already made a Transformerless LED driver circuit previously, but in that circuit, we used a dedicated LED driver IC like LNK304 to generate 13.6V 150mA of output current to power LEDs. But in this ...

But that solution didn’t sit well with me for several reasons. First, I wasn’t sure if having a diode (yes, the LED is a diode) in series with coil would affect the coil’s operation with the half-wave ...

Abstract: A new limiter circuit for use with electronic analogue computers has been developed from the basic diode bridge circuit. This limiter is simple in construction, has only one adjustment and ...