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ic 4440 amplifier circuit

In this project we are going to built a simple IC 4440 amplifier circuit but the output is very nice and very high. It is 12 volts audio amplifier using is LM4440 IC 19 Watts amplifier. We have designed it without PCB and used few capacitors with it. we can use it in car audio …

LM386 Audio Amplifier Circuit

In this article we are going to show you a simple LM386 audio amplifier circuit. Circuit diagram of the LM386 based audio amplifier is shown in the given below diagram and animated picture. It is built by using popular amplifier LM386 (IC). We have used 8-ohm speaker, one-watt speaker, four electrolyte capacitors. We have used …

How to Build a Latch Circuit with Transistors

Latch is logic circuit of electronics which has two stable states. A latch is a device similar to a transistors. It has 3 terminals which function like a transistor base, collector, and emitter. In transistor when current is fed to base the sufficient current flows from emitter to collector as long as base feeding but …

two transistor amplifier

For most systems single transistor amplifier does not provide sufficient gain or output impedance matching. The solution is only to combine multiple stages of amplification. In this amplifier circuit we are going to shows a simple two transistor amplifier. In the single transistor amplifier circuit we have made a very simple amplifier with one transistor, …

single transistor amplifier circuit

An audio amplifier is a device which multiply an applied input signal amplitude to a level that may be much higher than the input signal. The input is given in the form of an audio or a music. The amplifiers are classified into classes like class A, class B, class AB, class C and class …

Non Contact Voltage Tester

sIn this article, we will show you how to design a simple efficient Non Contact Voltage Tester by using transistors. You can build this circuit by using simple components and test the presence of AC voltages. You need not worry about getting zapped because it is a non contact voltage tester. Table of Contents Introduction …

LED blinker directly with 220v AC

In this 220v blinking led circuit we powered a 3 volt dc led directly with 220V AC. This circuit can be used on special places to identify the main voltages. Capacitor is charged by 470k resistor and diode. The capacitor is charged by Diode IN4007 and 470k resistor. Capacitor is voltages are 35v when capacitor …