I have put together a JLH1996 class A power amplifier.
It runs off +/- 15VDC and has a 8 ohm speaker.
I have set current to 500mA.
How do I work out power into speaker ?
Is it simply IIR or is it more complicated ?
It runs off +/- 15VDC and has a 8 ohm speaker.
I have set current to 500mA.
How do I work out power into speaker ?
Is it simply IIR or is it more complicated ?
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As it's a push-pull design, peak current staying in class-a is 500mA, so 2W (1W RMS) into 8 ohms. However with 15V rails you might achieve 10V swing which is 12.5W (6.25W RMS) so can stray into class-ab if you turn the volume up too much.
Thats great, thanks.
With 500mA its already quite loud in my living room.
Was thinking of going up to 10 watts output but that becomes a lot of heat to get rid of.
With 500mA its already quite loud in my living room.
Was thinking of going up to 10 watts output but that becomes a lot of heat to get rid of.
JLH1996 This is a class A amplifier. It consumes a lot of current. He is hot. You will need a large radiator. The optimal current is 1.2A. Installed by the regulator from above. There are options for an amplifier with Darlington or MOSFET transistors operating in class AB.
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