This is a delay circuit for the TV's audio output. The sound from the TV’s headphone output is too low, so we connect it to a power amplifier. However, when the system starts, a pop noise comes from the speakers. This circuit helps prevent that noise.
Here’s a simple circuit I built to explore bottom-up learning. It uses only basic components and is easy to put together on a breadboard. Great for beginners, homeschoolers, or anyone who enjoys DIY projects.
Circuit Features:
Simple turn-on delay circuit
Adjustable delay time: 0.1 to 11 seconds
Runs on USB 5V power (draws less than 10 mA)
No relay or moving parts — completely silent operation
Built with common parts: CD4066, NE555, and a few passives
Compact, low-cost, and easy to build on a breadboard
Read more: Audio Output Delay Circuit