This is a simple flashing led circuit with 2 leds and 2 NPN transistors. It illustrates the behavior of transistors and capacitors and if you use an oscilloscope it will be very easy to determine what ...

[Eric] uses the oscillator to build a simple LED blinker and shows what happens when he changes the transistor and adjusts the voltage or resistance. He also shows the circuit as a tone generator ...

This is a very simple LED dimmer circuit which has 2 transistors, 1 resistor and 2 potentiometers. Typical segment displays LEDs consume around 25 mA for each segment and should be limited to this ...

With cycling safety in mind, I bought a pair of low power red LED things that replace ... What I came up with, is the circuit above. The idea is that the constant current source – a traditional two ...

An LED — to continue with that example ... But with our simple transistor circuit, 20 mA will always flow. Well. Sort of. Practical current sources have a certain range of compliance because ...

The circuit contains one bipolar transistor and resistor per string ... 1 example includes LED loads D1 + D2, D3 + D4, D5 + D6 and a power-supply output voltage, with a constant output current ...

Transistors are the fundamental building blocks behind today's electronic revolution, powering everything from smartphones to ...

It is also possible to produce circuits controlled by the heat ... The heat-driven transistor builds on research that led to a supercapacitor being produced a year ago, charged by the sun's ...

The history of the transistor and similar types ... it produced a signal with the output power greater than the input. This led the pair to design and produce the first point-contact resistor ...