Audio Amplifiers
Bridge audio power amplifier TDA2030
A 35W audio power amplifier built with TDA2030 in a bridge connection with a +- 15V symmetric power supply. It is easy to build, do it yourself audio amplifier which will deliver up to 35W on a 8Ω speaker. Please use a good headsink to cool down the TDA2030 power amplifier.
TDA2030 integrates circuits are very [...]
Low noise microphone preamplifier
The microphone preamplifier circuit design presented in this schematic use SSM2015 produced by Precision Monolithics Inc. (PMI) which offers a high amplification and low noise ( 1.3nV/√f).
Has been designed to work with differential input signals and can deliver 10 to 2000x amplification and it is term of R4 value. For R5 = R6 the amplification [...]
Audio power amplifier 60W with 2N3055
This is a simple 60W class B power amplifier. This audio amplifier can work from 30 to 60V with the maximum input voltage around 0.8 - 1V. It is built with the well known 2N3055 and can deliver up to 80W on a 4Ω speaker.
60W audio power amp circuit schematic:
