Thanks Chuck
Help me here:
You wrote:
it would be chosen to have a capacitive reactance equal in ABSOLUTE VALUE to the inductive reactance of the load it switches.
1. Using the formula (with 230VAC, 50Hz)
XL = 2Pi fL, how would I determine L - the inductance of the machine of the switch which I want to bypass with a snubber?
And I (current) = VAC / XL
2. How do I choose a capacitor of 'x" nF, after I have calculated an XL of say 100 ohms?
3. Let's say an amplifier is pulling 300mA RMS at 230VAC, as measured on an ammeter in series with the AC switch, how does that info help me to choose a snubber?
Or is XL = VAC/I = 230/0.3 = 767 ohms?
4. If Tek put the 5 or 7ohm NTC in series with the 15 ohm resistor on the PSU, then what's happening on these 2465 PSU switches, which is causing the switch to weld?
This a new area for me to explore, but quite challenging with its significance in helping prolong the life of vintage equipment.
