a bit o help with powertrans tda7294 and 6n11 buffer

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i need power supply for theses,
24v ac 1.5a
12v ac 2a
can anyone share link for a power supply for sale,

i have $18to spend but if need be...

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

i just purchased a tda7294 amp + ac-dc rectifier , with 6n11 buffer

ok i need help finding a good power supply, am a noob, so.. any help would be helpful


the seller suggested use AC24V (about 1A-1.5A),,,,, after rectifier the DC is 24V*1.414=+-34V

and 6N11 preamp use 12V (1.5A-2A)



tda amp specs
Input voltageDC ±25V--±38V

Output power:68W+68W​

Output impedance:4-8ohm
​

ac-dc rectifier specs

input voltage:Max AC 33V

Output voltage: ≈ Input voltage X 1.414

​

pre specs

Input Voltage: AC 12V
​

Input impedance: 1 M Ohm​

Output impedance: > 5K Ohm​

Input sensitivity: 0-5V​

Gain:0dB​

Frequency response: 10Hz - 60KHz +/- 0.25 dB​

Total harmonic distortion: > 0.0025%​

SNR > 100dB​

　​

i have a transformer in parts box, 10.2-0-10.2 vac will this make the cut?, along with 12vac wall wart for pre?

any help is much appreciated.

 

[trigger]

anything?

 

[spgjmf]

i need power supply for theses,
24v ac 1.5a
12v ac 2a
can anyone share link for a power supply for sale,

i have $18to spend but if need be...

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

i just purchased a tda7294 amp + ac-dc rectifier , with 6n11 buffer

ok i need help finding a good power supply, am a noob, so.. any help would be helpful


the seller suggested use AC24V (about 1A-1.5A),,,,, after rectifier the DC is 24V*1.414=+-34V

and 6N11 preamp use 12V (1.5A-2A)



tda amp specs
Input voltageDC ±25V--±38V

Output power:68W+68W​

Output impedance:4-8ohm
​

ac-dc rectifier specs

input voltage:Max AC 33V

Output voltage: ≈ Input voltage X 1.414

​

pre specs

Input Voltage: AC 12V
​

Input impedance: 1 M Ohm​

Output impedance: > 5K Ohm​

Input sensitivity: 0-5V​

Gain:0dB​

Frequency response: 10Hz - 60KHz +/- 0.25 dB​

Total harmonic distortion: > 0.0025%​

SNR > 100dB​

　​

i have a transformer in parts box, 10.2-0-10.2 vac will this make the cut?, along with 12vac wall wart for pre?

any help is much appreciated.

looks to me like you need a 12v transformer for the buffer 1 amp should be fine.

for the amps, a 24-0-24 ( or 48vct) transformer - 2 to 4 amps ( at least). 18-018 up to 24-0-24 would be ok. The 0 is for the center tap. lookup center tap transformers to learn more.

I have this one for a chip amp -


Chia Yu Co Ltd
Input: 2 X 120Vac 50-60Hz 3" Dia X 1 1/2" Tall
Output 42Vct 21V- 0 - 21V 80VA

frm apexjr. miscellaneous.html

teh 12v buffer tranny can be had anywere - wall wart, old cd player, even radio shack sells them. alos check jameco for stuff.

good luck.

Jeff

 

[trigger]

i ended up finding a 1.5 a 12ac wall wart, it seems buzzie maybe an upgrade?