Measure AC current and ACV with multimeter, V x A = VA.
The KILLAWATT a great power meter.
P3 - Kill A Watt
Thanks WSJ
I put a clamp meter on the phase last night and got,
0.7A x 230v = 161VA
Does that sound low?
I do know that when I fired it up on the variac without winding it back to 0v first it blew the fuse straighht away! hence the soft start!!
I put a clamp meter on the phase last night and got,
0.7A x 230v = 161VA
Does that sound low?
I do know that when I fired it up on the variac without winding it back to 0v first it blew the fuse straighht away! hence the soft start!!
I measured my ALESIS RA150 amp at 66 VA, no signal.
4 ohms: 75 watts RMS per channel.
For the size of you trans, 161 VA is not too bad.
At my power cost, 161 VA would be about $12 a month running 24/7.
Dagwood, that transformer is physically quite massive and could put out huge magnetic field that could induce hum into everything close.
It may be worth considering mounting it outside of the amplifier in its own enclosure and you can build the power circuitry remotely from the amp.
It may be worth considering mounting it outside of the amplifier in its own enclosure and you can build the power circuitry remotely from the amp.
Hi Nico
Thanks for that, due to the size my whole mounting / case ideas are out the window anyway......back to the old drawing board 🙂
Thanks for that, due to the size my whole mounting / case ideas are out the window anyway......back to the old drawing board 🙂
planning to use a 2x30Vac transformer is the voltage OK for this amp?
If yes which one I shall use?I've two 2x30Vac/300VA transformers and one 2x30Vac/500VA transformer.
If yes which one I shall use?I've two 2x30Vac/300VA transformers and one 2x30Vac/500VA transformer.
I would check the spec on that trannies but I do believe anyone of the mje15030====series will work. Regards Evette
Yes I know It,s a little trickey but it can be done,,or if you have a 2sc2705 transistor or any mje340 you know anything in this range of familys it will work..Evette