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Proper power help
Posted: Thu Sep 22, 2016 11:00 am
by HotmouthRecords
What combo from JLM will achieve the following.
+15 / -15 vdc @ 1 amp
0 / 24 vdc @ 1 amp My studio power is 120V.
my current purchase worked perfectly ( powerstation ) however by putting a 120 to 2 x 15 trans I max out at 22v.
If i swap Trans which one will achieve my goal? running the 48v rail at 24 makes A LOT OF HEAT.
Re: Proper power help
Posted: Sat Sep 24, 2016 1:43 pm
by Joe Malone
HotmouthRecords wrote:What combo from JLM will achieve the following.
+15 / -15 vdc @ 1 amp
0 / 24 vdc @ 1 amp My studio power is 120V.
my current purchase worked perfectly ( powerstation ) however by putting a 120 to 2 x 15 trans I max out at 22v.
If i swap Trans which one will achieve my goal? running the 48v rail at 24 makes A LOT OF HEAT.
Hi Sal Did you try your idea of turning down the 48v to 24v to see if it worked and how hot the 48v reg got?
Otherwise the best transformer to use is always the one were the AC volts = the highest normal DC voltage (not including the 48v rail) So for 24vdc a 2 x 22vac to 25vac is ideal.
Since you are running a 24v relay PCB it is best to hang this between -15v rail and +15v rail o no click or noises are put into the audio ground. This would work with the 2 x 15vac transformer and using a 7824 would convert the +/-15v = 30v down to 24v. The relay ground would wire to the -15vdc.