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Audio Amplifier Circuit using IC L165

Last Updated on August 23, 2023 by Swagatam Leave a Comment

L165 amplifier circuit

The discussed audio amplifier circuits are designed around the versatile L165V amplifier IC, which is quite adaptable in various scenarios. Working Voltage Range While the minimum recommended supply voltage is 12V, the L165 amplifier circuits show satisfactory operation even below 9V, albeit with somewhat reduced performance. On the upper end, the absolute maximum supply voltage […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Audio, L165

Constant Current Generator Circuits Explained

Last Updated on November 17, 2023 by Swagatam 17 Comments

1

Constant current generators (CCGs), as the name suggests, are circuits designed to produce a steady load current regardless of significant fluctuations in load resistance or voltage levels. Basic Constant Current Generator Circuit Illustrated in Figure 1 is a basic example of such a circuit. In this configuration, Q1 operates in the common emitter mode. A […]

Filed Under: Electronics Theory, Power Supply Circuits Tagged With: Circuits, Constant, Current, Explained, Generator

Accurate Transistor Tester Circuits Explored

Last Updated on February 13, 2024 by Swagatam 12 Comments

transistor tester circuit diagram

In this article we talk about a few simple yet accurate transistor tester circuits which can used to identify whether a transistor is good or bad. Note: Please test *only* BJTs and MOSFETs (enhancement or depletion) with these circuits. Simple Good/Bad Transistor Checker using a Single LED Do you have a lot of strange old transistors […]

Filed Under: Meters and Testers Tagged With: Accurate, Circuits, Explored, Tester, Transistor

Footsteps Detector Circuit

Last Updated on August 1, 2023 by Swagatam Leave a Comment

footsteps detector sensor circuit using a loudspeaker

By sensing vibrations from footfall, a Footsteps Detector Circuit is a creative and affordable approach for catching intruders. It employs a simple setup with a low-cost loudspeaker and a mute switch to pick up even the smallest steps. This simple circuit is excellent for enhancing building and garden security. We’ll go through the fundamental components […]

Filed Under: Security and Alarm, Sensors and Detectors Tagged With: Detector, Footsteps

How to Modify a Transformer

Last Updated on January 23, 2024 by Swagatam 16 Comments

Commonly, the perfect transformer might not be readily accessible for purchase, or if it is available, it can be costly. Nonetheless, there is a possibility of modifying the transformer’s secondary winding, especially when producing small voltage and current outputs. This approach can provide a highly cost-effective solution for creating a customized power supply. Transformer Power […]

Filed Under: Power Supply Circuits Tagged With: Modify, Transformer

Battery Low Voltage Alarm Circuit

Last Updated on January 3, 2024 by Swagatam 4 Comments

table 1

Despite its simplicity, the Battery Low Voltage Alarm circuit has a very important function. It forewarns you of approaching battery failure so that you may run to the store and get replacement cells before your equipment stops functioning entirely. Because of its compact size and low current need, it may be integrated into the devices […]

Filed Under: Security and Alarm Tagged With: Alarm, Battery, Voltage

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