LDR Sensor LDR Sensor Based Sunset Lamp using IC NE555 Timer Circuit automatic lights flicker due to the change in light intensity at dawn and dusk. So compact fluorescent lamps (CFLs) are unsuitable in such circuits as flickering may damage the electronic circuits within these lamps. The circuit described here can solve the problem and switch … Read more
LM3886 Amplifier This tutorial is an introduction to LM3886 amplifiers, the most basic building block of op-amps. This circuit is a simple amplifier that can be used as a basis for more complicated amplifier designs. The circuit uses one LM3886, which is an adjustable gain amplifier with a quiescent current of around 100nA. This means … Read more
Traffic Light Controller circuit The Traffic Light Controller circuit using CD4017IC The circuit’s timing and sequential operation is done by two CMOS ICs (IC1 and IC2) while the actual power switching is done by Triacs. CD4017 IC Circuit Diagram Traffic Light Controller circuit using CD4017 IC From the Traffic Light Controller circuit using CD4017 IC, a 10V negative … Read more
LM358 Amplifier The LM358 Amplifier circuit is a versatile audio amplifier employing a low-cost LM358 op-amp. The differential inputs give the amplifier excellent immunity to common-mode signals which are a common cause of amplifier instability. The LM358 op-amp audio amplifier circuit is the ground point for wiring in a simple design. The ground sensor can … Read more
Fire Alarm Circuit Fire Alarm circuit using LDR: This is a simple fire alarm circuit based on a Light Dependent Resistor (LDR) and lamp pair for sensing the fire. The alarm works by sensing the smoke produced during the fire. The circuit produces an audible alarm when the fire breaks out with smoke. Fire … Read more
TDA2822M Amplifier TDA2822M Amplifier 2.0 Channel Stereo Audio Amp Board Module TDA2822M Amplifier 2.0 Channel Stereo Audio Amp Board Module is the article explaining TDA2822M Amplifier 2.0 Channel Stereo Audio Amp Board Module TDA2822M Amplifier 2.0 working on DC 1.8-12V stereo Audio Amplifier TDA2822M Amplifier 2.0 working on DC 1.8-12V stereo Audio Amplifier this … Read more
12v DC to 230v AC Converter 12v DC to 230v AC Inverter circuit diagram, It’s used as the oscillator stage astable multivibrator contained in IC1, a CMOS 4047 by varying the resistance value of R1 trimmer (220 k total resistance) can vary the oscillation frequency of 40 Hz to 70 Hz square wave, phase-shifted by … Read more
Burglar Alarm security circuit The Burglar Alarm security circuit shown here is used as a burglary alarm. LDR is kept in such a place that when the thief enters our house, a shadow falls on the LDR. A small beam of light is also needed to deliver an uninterrupted signal to the LDR. To obtain the best light source, we … Read more
3000W Stereo Power Amplifier This power amplifier circuit uses a transistor amplifier from the front, signal splitter, driver, and power amplifier. The current consumption required is quite a large power amplifier that is 15-20 A 1500W power amplifier circuits for this. The supply voltage needed by the power of this amplifier is the optimal working … Read more
2000W Power Amplifier 2000W Power Amplifier Circuit Diagram is the article on circuits99.com explaining 2000W Class AB Power Amplifier Circuit Diagram This is the circuit diagram of 2000W class AB power amplifier. 2000W Class AB Power Amplifier Circuit Diagram The circuit diagram of the 2000W class AB power amplifier uses 7 pairs of MJ15003 and MJ15004 … Read more