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Simplist BJT amp.... again.
Simplist BJT amp.... again.
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Old 6th March 2003, 07:30 PM   #1
RichardJones is offline RichardJones
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Join Date: Jan 2002
Default Simplist BJT amp.... again.

Ok... I know this was a recent thread...
I want to continue it.

I am looking to build a Class A, simple amp with max 3 transistors or MOSFETS.

Running from battery supply.

Power output > 1W.

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Old 6th March 2003, 08:43 PM   #2
Fuling is offline Fuling  Sweden
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Join Date: Aug 2001
Location: Sweden (Mora)
What about something Zen-like but the CCS replaced by a choke?
One mosfet per channel.
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Old 7th March 2003, 01:00 AM   #3
Circlotron is offline Circlotron  Australia
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Location: Melbourne, Australia
As Fuling says, using a choke instead of a CCS is good. It means the wattage drain from the limited battery supply is halved. Same current but only half the voltage needed. Efficiency is max 50% instead of max 25%.
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