Bought these nicely done tube preamp boards from eBay and would like to know if a PC PSU can be configured to power them.
"This board is mono Mirror Design. the circuit is base on the famous Conrad-johnson preamp.The sound is very excellent."
Each board works voltage: 0-AC220V (about 25mA) 0-AC7V (6.3V-9V are all ok. about 1.2A)
ECC83 Tube preamp kit
"This board is mono Mirror Design. the circuit is base on the famous Conrad-johnson preamp.The sound is very excellent."
Each board works voltage: 0-AC220V (about 25mA) 0-AC7V (6.3V-9V are all ok. about 1.2A)
ECC83 Tube preamp kit
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Nope. Your boards take AC input and your power supply outputs DC and 24 at the absolute most. The boards are designed to be run from a transformer.
If your idea was to connect the 220 V input straight to the mains and the other input to the power supply, don't even try that, as connecting the 220 V input without transformer would be very dangerous. Besides a transformer, you also need a fuse.
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You can use for your 220V a little isolation transformer from a shaver socket, sometimes you can get second hand very cheap on ebay. For the 6.3 to 9 also a small low power toroidal will do.
Of course there is the option of using a proper power transformer designed for valve amplifiers, with both windings, but that will cost a bit more. It depends on what is available near you. There are decent ones in Aliexpress.
Of course there is the option of using a proper power transformer designed for valve amplifiers, with both windings, but that will cost a bit more. It depends on what is available near you. There are decent ones in Aliexpress.
A computer PSU would not be the appropriate choice.
Your preamp boards require a high DC voltage that is not supplied by a computer PSU. Yes, you could use it for the low voltage (12 volt) supply, but you will still need to find the high voltage somewhere else.
You would be better served by purchasing a transformer to supply the voltages you need.
Your preamp boards require a high DC voltage that is not supplied by a computer PSU. Yes, you could use it for the low voltage (12 volt) supply, but you will still need to find the high voltage somewhere else.
You would be better served by purchasing a transformer to supply the voltages you need.
Thanks the seller recommended two of these, can anyone recommend what else I might need apart from a fuse. My electrical is 110v.
R-Core Transformer Output 0-220v 0-7v
Can you send the link thanks. It's not about cost it's more about compact and low noise.
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