LM 386 Audio Amplifier
LM386 is one of the earliest audio ICs but is still going strong. It works with a few external components and is indispensable for general hobby circuits where audio amplifier of low power is needed. It is mini audio power amplifier which would prove essential as a test amplifier for solving typical problems in the [...]
A Collar Mike
Microphone is added here for the very use it has, and by the ease of making one. It can be used as a good quality microphone. Here is a simple circuit that makes the condenser mikes work, which can also be used as a collar mike. Condenser mikes are rugged, have excellent frequency response, and [...]
