Emitter followers are not really needed between input LTP and VAS but they will improve the amp significantly if used between VAS and output HEXFETs.
Also, one small MOSFET (f.e. IRF610) will do better job as temp. comp. device than two BJTs. Vgs multiplier is needed here, not Vbe - ouput devices are MOSFETs so it's advantageous to use the same behaving device for thermal control.
Also, one small MOSFET (f.e. IRF610) will do better job as temp. comp. device than two BJTs. Vgs multiplier is needed here, not Vbe - ouput devices are MOSFETs so it's advantageous to use the same behaving device for thermal control.
Looks like a mixture of eti5000 and playmaster.
ETI5000 attached. Note that 18V zener must be inserted between collectors of Q5 and Q7 - the original pdf image. That notably reduces temperature of associated transistors.
cheers,
ETI5000 attached. Note that 18V zener must be inserted between collectors of Q5 and Q7 - the original pdf image. That notably reduces temperature of associated transistors.
cheers,
Attachments
Thanks you.I like the name Elf, sounds like a low power amp.
Nice project Veysel!
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