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|25th February 2011, 01:52 AM||#1|
Join Date: Dec 2009
a bit o help with powertrans tda7294 and 6n11 buffer
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...
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
ac-dc rectifier specs
input voltage:Max AC 33V
Output voltage: ≈ Input voltage X 1.414
Input Voltage: AC 12V
Input impedance: 1 M Ohm
Output impedance: > 5K Ohm
Input sensitivity: 0-5V
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.
Last edited by trigger; 25th February 2011 at 01:54 AM.
|23rd March 2011, 05:34 PM||#3|
Join Date: Jan 2008
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.
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