Hi all,
I've just finished a regen radio project using a single 1625 valve instead of the usual 2N3819 FET. I have over the years built a few regen radios using transistors but never one that uses a power beam tetrode, however this design without doubt works extremely well considering it only needs 12 volts on the anode insead of the normal 600 or so.
The audio output however is very weak, and I wondered if anyone has any idea where I might find a circuit which uses one or two low voltage valves that can be connected to the 1625 to increase the audio output.
Someone mentioned that a pair of EF183's would work very well on 12 volts but I've no idea how to built such an amp.
Thanks,
Bigbill
I've just finished a regen radio project using a single 1625 valve instead of the usual 2N3819 FET. I have over the years built a few regen radios using transistors but never one that uses a power beam tetrode, however this design without doubt works extremely well considering it only needs 12 volts on the anode insead of the normal 600 or so.
The audio output however is very weak, and I wondered if anyone has any idea where I might find a circuit which uses one or two low voltage valves that can be connected to the 1625 to increase the audio output.
Someone mentioned that a pair of EF183's would work very well on 12 volts but I've no idea how to built such an amp.
Thanks,
Bigbill