Simple Electronic Lock Uses Single-Transistor Circuit. May 26, 2003. ... I used a binary code of 0110100111 in my circuit. The switches are implemented in two different ways.

The switch circuit consists of two basic components, ... With the addition of a simple transistor and a resistor on its base to limit current, we can invert the signal needed to turn on the FET.

The circuit in the figure shows a low-cost solution based on a transistor switch (Q1). The transistor is off under normal conditions, when the differential amplifier built around U1 amplifies the ...

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).

Share; Print; Bernie's Basics. Transistors swing both ways. The power of computers comes down to billions of tiny switches squeezed onto a silicon chip.

The simple current-limiting load switch shown in Figure 1 will be familiar to most readers. In this circuit, a high level signal applied to the input switches on MOSFET Q2, which energizes the load.

Transistors, the tiny switches that flip on and off inside computer chips, have long been the domain of electricity. But scientists are beginning to develop chip components that run on light.

Transistors, the tiny switches that flip on and off inside computer chips, have long been the domain of electricity. But scientists are beginning to develop chip components that run on light. Last ...