31-10-2018, 06:14 PM
(This post was last modified: 31-10-2018, 06:16 PM by Geordie McBoyne.)
There has been some discussion about employing the PC900 frame grid TV RF amplifier valve as a preamplifier for magnetic phono cartridges. The valve has a vari-mu characteristic and this is said to render the valve unsuitable for large signal applications but considering the MM cartridge supplies only 10 to 30mV that shouldn't be a problem.
A discussion about using the valve here: https://www.diyaudio.com/forums/analog-l...tures.html
From the Radiomuseum: https://www.radiomuseum.org/tubes/tube_pc900.html
There has also been a discussion about using the PC900 as an audio preamplifier on the UKVRRR.
Geordie McBoyne.
A discussion about using the valve here: https://www.diyaudio.com/forums/analog-l...tures.html
From the Radiomuseum: https://www.radiomuseum.org/tubes/tube_pc900.html
There has also been a discussion about using the PC900 as an audio preamplifier on the UKVRRR.
Geordie McBoyne.
