Schematic Power Amplifier and Layout

LCD Modules using PCF8574 8 bit I2C LCD Modules using PCF8574 8 bit I2C

LCD Modules circuit HD44780 based LCD Modules circuit

Audio Frequency Sensor Schematic using Transistor and IC  2N5086, LM3389 Audio Frequency Sensor Schematic Sensor noise for the safety of ultrasonic sensors for detecting the presence of noise in the capture tool for air propagation.

LM3915 Audio level led indicator circuit diagram

Audio mixing equipment Audio mixing equipment with NE5534 Audio mixing equipment Audio mixing equipment