|I have designed a small
amplifier at 2.5 watts to be used with radio receiver
|KwEa have very large headroom on the audio out.
It's easy to get hearing damage caused by powerful audio amplifier.
I have therefore designed this 2.5 Watt amplifier.
Here I have started at the work.
Another option is to use a compressor / limiter before the audio amplifier.
I build the amplifier on a circuit board.
|The amplifier is built
around an LM833 op amp.
Two mosfet transistors provide enough output power.
After I made amplifier finished I found that I got some noise due to
ground loop from Power. Power has a switching frequency of 400 Hz.
I introduced therefore an balanced audio transformer on input.
Here is the amplifier connected to Kw.Ea receiver and my power.
I have designed a new and simpler amplifier for 15W.S.E.b.
BACK TO RADIO PAGE