What about 180 k, 220 k, or 390 k?
Do they have 100 k (put a few in series)?
Remember that the tolerance on the capacitors in your photo is 10%.
They had 100k 1/4w 10%, resistors from image are 1% if im not wrong?
Also did check time constant:
t=R*C
"RC time constant - this figure — which occurs in the equation describing the charging or discharging of a capacitor through a resistor — represents the time required for the voltage present across the capacitor to reach approximately 63.2% of its final value after a change in voltage is applied to such a circuit."
For 50Hz system full cycle duration is 20ms, half cycle is 10ms...
Right neon is "connected" R and S, and left neon is "connected" to R and T line.
O, I get it :-)
only neon on 120 degrees lines works:
- if order is RST, neon on R-S sees 120 degrees and is lit, other neon is R-T so 240 degrees and not lit.
- if order is RTS, neon on R-S sees 240 degrees and is not lit, other neon is R-T so 120 degrees and is lit.
For RST following right neon schematic, between R-S there is connected 600kOhm and 20nF and time constant is 0.012s or 12ms.
For RST and time constant 12ms R-line is at peak and S-line is approximately at zero.
For RTS following right neon schematic and for given time constant of 12ms R-line is at peak and S-line is also at peak so right neon could not be lit for reverse rotation.