MIDI circuit board schematic

The LM3434 adaptive constant on-time DC/DC buck (step-down) constant current controller can be used to design a simple high-power LED driver application. The LM3434 provides a constant current for illuminating high-power LEDs. The output configuration allows the anodes of...

A simple tool to check the degree of radiation from an electric or electronic instrument. The LEDs in the circuit will provide a running light pattern when the circuit detects electromagnetic radiation from the device. It can identify radiation...

The circuit was designed to create a line preamplifier using double triode tubes. It consists of three parts, including the main preamplifier. The line preamplifier circuit utilizing double triode tubes is structured to enhance audio signals by amplifying low-level signals...

The circuit employs an infrared (IR) phototransistor, designated as Q1, to sense the IR output signal from a remote control. The output from Q1 is then amplified by a PNP transistor, labeled Q2, which activates LED1. This illumination indicates...

The microphone preamplifier circuit design presented in this schematic utilizes the SSM2015 component manufactured by Precision Monolithics Inc. (PMI). This component provides high amplification with low noise characteristics (1.3nV/f). The design is configured to handle differential input signals and...

This document tells about one of my experiments with semiconductor laser modules. I bought one semiconductor laser for all kinds of experiments. This TIM202 module is a small (38x14x14 mm) semiconductor laser module, similar to those types used in...