It is possibly the smallest LED flasher to date, which is able to flash an LED ON/OFF infinitely using a single transistor, a resistor, and a capacitor. Can you imagine making a great looking LED flasher or blinker with just a single transistor and a couple of other passive parts? That’s exactly what I have […]
Transistor
Solving Darlington Transistor Formulas and Calculations
Now in this post you will learn about this amazing BJT device which is called Darlington Transistor. It got this name after genius engineer Sidney Darlington who first gave this idea, so we remember him. What Is Inside Darlington Transistor Basically this device is like special combo of two normal NPN or PNP bipolar junction […]
How to make a Transistor Latch Circuit
In this post I have explained how to make a simple transistor latch circuit using just two BJTs and a few resistors. Introduction A transistor latch is a circuit which latches ON with a permanent high output in response to a momentary input high signal, and continues to stay in this position as long as […]
Make this Simple Buzzer Circuit with Transistor and Piezo
In this article I have explained how to make a very simple circuit for buzzer using piezo electric transducer, two resistors, a small coil and a BC547 transistor. A buzzer is a high frequency oscillator circuit used for generating a buzzing sound through a transducer or speaker output. Simple Buzzer using a Single Transistor Just […]
2N3906 Datasheet [40V, 200 mA, PNP Transistor]
In this post I have explained the complete datasheet of the transistor 2N3906. It is the complementary to the transistor 2N3904. Here is the complete datasheet for the 2N3906 PNP transistor. Pinout Configuration The transistor 2N3906 has 3 pinouts named as emitter, base and collector. These pinouts are arranged as shown in the following figure: […]
2N3904 Datasheet [40V, 200 mA NPN Transistor]
In this post I have explained the main datasheet and pinout details of the NPN transistor 2N3904 Introduction The transistor 2N3904 comes under the category of NPN small signal, low power, general purpose transistor, mainly applicable for switching and for signal amplification. It’s dynamic range may include a current handling capability of more than 100mA […]