Hello fellows
I´ve got an LC-Audio MM-RIAA stage and I would like to replace my existing powersupply to a batterysupply. (just want to see if it does any audiable defferance). It needs +/- 12-17V, on the PCB there are 3 "inputs" marked +13v, -13v and GND. I suppose if I have a battery the +pole goes to +13v, the -pole to -13v, but what about the GND, where do I connect the ground???
I´ve got an LC-Audio MM-RIAA stage and I would like to replace my existing powersupply to a batterysupply. (just want to see if it does any audiable defferance). It needs +/- 12-17V, on the PCB there are 3 "inputs" marked +13v, -13v and GND. I suppose if I have a battery the +pole goes to +13v, the -pole to -13v, but what about the GND, where do I connect the ground???
Use two batteries, one from ground to +, the other from ground to -. Naturally, the latter battery has its + terminal grounded, the former has its - terminal grounded.
You could build an active ground, but that's more comlicated than necessary.
Triple check all polarities before switching on your circuit!
You could build an active ground, but that's more comlicated than necessary.
Triple check all polarities before switching on your circuit!
Plysh,
I run a dact Line stage from batteries. Works very nicely. As a little advice don't skip on having 4 capacitors as they decribe in the dact website. Also, i have found out for reason i can't quite explain that bigger batteries make a huge difference in the bass. I am currently using some two 9 Ah 12v Batteries and it's a world of difference with the 4A i was using. 9Ah looks like overkill when you know the power comsumption of these modules , but i found it's very effective.
regards,
T
I run a dact Line stage from batteries. Works very nicely. As a little advice don't skip on having 4 capacitors as they decribe in the dact website. Also, i have found out for reason i can't quite explain that bigger batteries make a huge difference in the bass. I am currently using some two 9 Ah 12v Batteries and it's a world of difference with the 4A i was using. 9Ah looks like overkill when you know the power comsumption of these modules , but i found it's very effective.
regards,
T
ALW measured lead cells and found them hideously noisy and heavily influenced by the load current, effects of current transients trailing long after the event itself.
I measured alkaline, which is low-noise indeed, and NiCd, which is of slightly higher noise, but suffers from unexplainable transient events once every few milliseconds.
So indeed you need a load of capacitors to get rid of the batteries' crap.
Still have to measure NiMH.
http://www.tnt-audio.com/clinica/regulators_noise4_e.html
I measured alkaline, which is low-noise indeed, and NiCd, which is of slightly higher noise, but suffers from unexplainable transient events once every few milliseconds.
So indeed you need a load of capacitors to get rid of the batteries' crap.
Still have to measure NiMH.
http://www.tnt-audio.com/clinica/regulators_noise4_e.html
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.