Because the voltage across the diode is only slightly dependent on the current through it, you can use an LED with a resistor in series on this semi-regulated voltage.

I use simpler method. Connect laser diode to 5 V supply and 470 Ohm resistor. No lasing – go lower with resistance, to 390 Ohms. No lasing, go lower to 330 Ohms, etc … until lasing starts.

The simple Diode and LED Tester presented here costs under £5 to build ... 820R 0.25W Resistor: 2 R2,R3: 22K 0.25W Resistor: 2 C1,C2: 470nF Capacitor, 7.5mm (0.3") pitch: 1 C3: ...

You can build a simple low-current voltage regulator from a resistor and a Zener diode. This type of regulator is often adequate for noncritical applications such as internal bias voltages. The ...

In DC voltage applications, the RC snubber network is typically wired across the relay contacts, whereas in standard AC ...

By putting in a 6.8-Ω resistor, Pease caused the current through the LED to be 10 mA. 1. Bob Pease used an LM334 current source to servo the current from a PNP transistor through an LED diode.

Flexible organic memory devices are promising candidates for data storage applications. Here, Ji et al.develop a flexible all-organic 64-bit memory cell array possessing one diode–one resistor ...

Molecular circuitry: International team breaks one-diode-one resistor electronics. ScienceDaily . Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2020 / 06 / 200602114340.htm ...

Save guides, add subjects and pick up where you left off with your BBC account. To investigate the relationship between current and potential difference for a resistor, bulb and diode ...