Hi SalasIf its DC coming from a reg chip like in the Mezmerize there will be no emitted field or other correlation to the contacts so to contaminate the signal lines.
So I will place a relay before R14 and switch between input stages.
I would like to use raw DC from the psu to feed the chip reg but typical 7812 has too low max input voltage (that can easily reach 50v).
Can you suggest a simple solution ?
Yes, of course... I already thought about that but am wondering on what values to use.Two resistors, voltage divider.
Imagining a 12v relay that consumes 9mA in it's 1300ohm coil, if I feed it with a 7812, what should be the current that the 7812 is drawing from the psu ?
I would like to use the highest possible resistor values in the voltage divider in order to unload the psu BUT without starving the 7812.
I would like to use the highest possible resistor values in the voltage divider in order to unload the psu BUT without starving the 7812.
I believe I can use a 1000 ohm to 2000 ohm voltage divider.
Yep, gives you some margin.
Ok... here we have a dual coil latching that seems ok: TQ2-L2-12V Panasonic Industrial Devices | Mouser
In this case I must use push buttons to switch between states. As after switching there is no more power on the coils, I will need to use the extra relay pins to light the led indicators.
In this case I must use push buttons to switch between states. As after switching there is no more power on the coils, I will need to use the extra relay pins to light the led indicators.
I used a 805 or 604 smd cap across the gap from Hot to Cold on the back of the RCA
This achieves the next to lowest RF impedance.
The lowest impedance would be a group of smd distributed around the whole perimeter of that gap from Hot to Cold.
On that basis using two lower value smd caps would be better than using one smd cap.
Have a look at the newer XLR plugs with the integrated & distributed capacitance from Hot to shell to conduct RF to Chassis.
Hi Andrew,
I do see Neutrik uses that technique, but they connect shield to GND. Not Hot to shield or GND.
I hope I got your advice correctly. Please see second picture. Caps must be 0.01uF. Right?
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Hi Andrew,
I do see Neutrik uses that technique, but they connect shield to GND. Not Hot to shield or GND.
I hope I got your advice correctly. Please see second picture. Caps must be 0.01uF. Right?
It's only conencted on one side of the cables... source or receiver...
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