Muting relays?
Back around post 4711 or so (page 189), there were a couple pictures of a muting relay circuit (Rays?). Any particularl realys you guys find that work well? I'm putting a realy muting circuit into my Rotel RCD855 (along with a discrete I/V stage) and had planned on using an Omron G6A-234P-ST-US-DC12 http://oeiwcsnts1.omron.com/ocb_pdf...86929DE586256FC7006173ED/$File/D20G6A0305.pdf, but will switch to something else if this one isn't fast enough, etc. Thanks for any help!
Chris
Back around post 4711 or so (page 189), there were a couple pictures of a muting relay circuit (Rays?). Any particularl realys you guys find that work well? I'm putting a realy muting circuit into my Rotel RCD855 (along with a discrete I/V stage) and had planned on using an Omron G6A-234P-ST-US-DC12 http://oeiwcsnts1.omron.com/ocb_pdf...86929DE586256FC7006173ED/$File/D20G6A0305.pdf, but will switch to something else if this one isn't fast enough, etc. Thanks for any help!
Chris
Hi Chris,
This one looks good. For muting, it's best to use a so called 'small signal' relay, with gold plated contacts. Most of the times you will not be switching any signal (that's called 'dry' switching), and this way the contact resistance is low enough to make sure the output is properly clamped to ground.
Regards,
Ray
This one looks good. For muting, it's best to use a so called 'small signal' relay, with gold plated contacts. Most of the times you will not be switching any signal (that's called 'dry' switching), and this way the contact resistance is low enough to make sure the output is properly clamped to ground.
Regards,
Ray
HiChivvyp said:
maybe that´s true ... or maybe the caps where already faulty when I monted them.
Right now I am using 120uG Pana linking the outputs to the common ground in the regulators.
I am not following Ray´s schematic because I always noted a big drop in output whenever I placed the cap parallel to R2. in the LM337 -12v reg.
Can you comment on that ?
Best Regards
Ricardo
6h5c said:
Thank you Ray
I am using the correct polarity but my schema is different from yours.
I did not put the cap in parallel with R2 as you indicated because I noticed a big drop in the output.
I decided to put the cap between pins 1 and 3 in the 337 with + linked to pin 1 (common ground).
I would like your comment on this setup before I install it in the CD53.
Best Regards
Ricardo
Not good!
The cap must be parallel to the 1k05 resistor. If you have a drop in output voltage that way, then something else must be wrong. Are you sure you used the right pinning? LM337 is different from LM317! Try adding a 10...47u output capacitor. Maybe you have an oscillation problem.
Regards,
Ray
The cap must be parallel to the 1k05 resistor. If you have a drop in output voltage that way, then something else must be wrong. Are you sure you used the right pinning? LM337 is different from LM317! Try adding a 10...47u output capacitor. Maybe you have an oscillation problem.
Regards,
Ray
