So you have like 3 values of R14 to shift with the switch?
Cool
Yes 300, 600, and 1k. Non-shorting rotary switches and there is zero noise when switching.
Yes 300, 600, and 1k. Non-shorting rotary switches and there is zero noise when switching.
Very nice
Do you have wires from the location of the resistor to the switch - and back? Or have you managed to place the switch near both PCBs in some way?
I know it would be a pain to take pic of this implementation, do you perhaps already have a pick of this setup? Do you happen to remember what switching device you used?
Getting ready to use some lower output MC, this would be super handy...
Russellc
Attachments
Thanks, much appreciated!
Russelc
It looks like a fairly large part, do you have a knob on the outside of the chassis? It looks large enough for those purposes. Or is it concealed inside?
Russellc
Hate to drill a hole through my face plate, I guess I could have it exit the rear panel. If it isnt too large, I can conceal it inside. I will not need to change carts very often, so no big deal for me to make "internal" adjustment. Maybe even a small board inside with Tiny DIP type switches...
Russellc
Do you have 2 of these single pole switches - or should it be A20303RNZQ for double pole ?
Thats also a very good methtod.
Its similar to what I have on the back of my Thorens TD126 Mk III Centenial, where the ekstra plugs original was ment to be used for capacitors for MM-pickups.
Resistors? Is 0.25W mandatory?
Hi
I am a litle confused as the description of the parts needed says all resistors are 0.25W - but Wayne also writes that he mostly uses Vishay-Dale RN55D - which I think are only 0.125W
I think I could use Vishay-Dale RN60D? What are your oppinions in selecting restistors?
And by the way - why are the CMF-series more expensive than the RN series ? I would have imagined it would be the other way round (RN being military grade)?
The nice guy I bought the project from is talking warmly of Welwyn (but they are rather expensive)...
As always all your kind input is welcome
Hi
I am a litle confused as the description of the parts needed says all resistors are 0.25W - but Wayne also writes that he mostly uses Vishay-Dale RN55D - which I think are only 0.125W
I think I could use Vishay-Dale RN60D? What are your oppinions in selecting restistors?
And by the way - why are the CMF-series more expensive than the RN series ? I would have imagined it would be the other way round (RN being military grade)?
The nice guy I bought the project from is talking warmly of Welwyn (but they are rather expensive)...
As always all your kind input is welcome
The RN series are derated for the military spec. The 1/4w resistors in the RN series are actually 1/2w devices. In your example the RN55 say 1/8w on the datasheet but are functionally identical to the CMF55 1/4w
The RN are also not lead-free (because the mil-spec understands the disaster that is lead-free solder and components) and being leaded, are difficult to sell.
The RN are also not lead-free (because the mil-spec understands the disaster that is lead-free solder and components) and being leaded, are difficult to sell.
