Tag: diy homemade electronics project

Preamplifier Circuit Diagram using BC140

Preamplifier Circuit Diagram using BC140 Transistor

The preamplifier circuit diagram using the BC140 discussed in this article demonstrates a simple yet effective configuration utilizing the BC140 transistor for amplifying weak audio signals. With its low saturation voltage, high current gain, and wide frequency response, the BC140 transistor ensures high-quality audio amplification for various applications.

Infra-Red Proximity Detector Circuit Diagram

Infra-red proximity detector circuit diagram

Introduction Infra-red proximity detector circuit is one of the most popular gadgets these days. This circuit uses an LM567 IC that is specifically designed to detect the presence of infra-red rays. This technology is extensively used in various security systems, automatic door openers, and household gadgets to sense nearby objects. The detector is intended for […]

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