Hi,
I've been playing with 12volt tube preamps for a while, but know I want to turn it into an amp.
Been Looking at TDA 2050 and TDA7294.
I'm struggling to find CT transformer in New Zealand, I'm not sure if that's even the best option. Could I use a 24v DC wall-wart? RS spares don't seem to have any 🙁
Trying to find the biggest amount of watts, without breaking the bank on a transformer.
Would appreciate some help.
Kev
I've been playing with 12volt tube preamps for a while, but know I want to turn it into an amp.
Been Looking at TDA 2050 and TDA7294.
I'm struggling to find CT transformer in New Zealand, I'm not sure if that's even the best option. Could I use a 24v DC wall-wart? RS spares don't seem to have any 🙁
Trying to find the biggest amount of watts, without breaking the bank on a transformer.
Would appreciate some help.
Kev
Don't know for the TDA2050, but the TDA7294 for sure needs a split rail supply. At least in the datasheet there's no application for single rail use.
Best regards!
Best regards!
Hi Kev,
An amplifier intended for a symmetrical supply voltage can in principle also be operated from a single supply voltage, but it may require quite some effort to create a virtual reference level.
You do not want "to break the bank" so what about getting a 19V laptop charger (96W) and make an amplifier based on the STA540? Or buy, a 24V "wall-wart" (120W) and find a TPA3116 board?
An amplifier intended for a symmetrical supply voltage can in principle also be operated from a single supply voltage, but it may require quite some effort to create a virtual reference level.
You do not want "to break the bank" so what about getting a 19V laptop charger (96W) and make an amplifier based on the STA540? Or buy, a 24V "wall-wart" (120W) and find a TPA3116 board?