Fig 1 shows a 2nd optocoupler driving an NPN transistor. The components indicated should be able to source or sink 500mA with a voltage drop of about 1V. I was able to test mine at 100mA. At 100mA, ...

Aiming to create digital circuits from such things as relays, ... [Mark] took this concept and ran with it, creating a single-transistor latch that can store one bit of information.

The nanotechnology team at Hewlett-Packard has found a way of improving computer power by replacing transistors with the ‘crossbar latch’, which is a bistable-switch latch in the field of molecular ...

Figure 1a shows a latching circuit based on an optocoupler, IC 1. If the off switch remains closed, pressing the on switch powers the LED in the optocoupler. Thus, the transistor in IC 1 turns on. You ...

Circuit diagrams often show transistors in switching circuits. For an ideal NPN transistor, the switch-on voltage at the base is typically 0.6V (acceptable range is 0.6V to 0.8V).

In this lesson, students build two circuits and explore how transistors function. When Bell Labs introduced the transistor in June of 1948, a spokesman proudly announced "This cylindrical object ...