Even doing this with a pair of tiny.5 mW HeNe tubes would require a power supply which will be proportionately much more expensive than two smaller ones.
If the transistor drops 150 V, the ballast resistor will only drop 150 V and the current will be cut in zelf grote bloempot maken half.
The voltage on the plate will then vary resulting in an incremental current change of roughly: delta(Vin TC where TC is the transconductance of the vacuum tube at its operating make your own roller coaster point.
Current balancing resistors are added to compensate for unequal DC leakage currents.If current limiting is not provided, this may also result in a bomb or smoke grenade.(Portions of the following from:.These modules are powered by a single DC voltage but may also require signals like 'HV Enable' and/or a feedback or reference to operate properly.(Note that separate ballast resistors will be required for these.) For the SP-125 in particular, a common cathode at the center of the tube is fed from separate anodes at each end.The spark generating modules used in electric stove or furnace igniters, and pocket lighters that use a capacitive discharge approach would also work with few additional parts (a pair of HV diodes).) The transformer was totally potted so I could not easily determine anything about its construction other than its winding resistances and turns ratio of about 1:100.The biggest problem was rerouting one of the traces on the air cleaner PCB to prevent arcing once it was isolated with its outputs floating on the HV side of the Aerotech brick.It IS more flexible as a rectifier of nearly 3d maker online any desired voltage rating can be custom made.
Use this circuit where the dots on the windings oppose.
However, my initial attempt at using one of those hand-held BD-10 "Oudin" coils intended for vacuum leak testing (among other things) totally failed.The diodes should have a PRV rating greater than the starting voltage requirement of your HeNe tube, 15,000 V should be sufficient.If the output of the power supply always goes though a few feet of coax, it probably isn't needed.The AC version has "contacts" (actually a triac) rated at up to 2 A and 240 VAC.Reverse the input connections if you cannot get the tube to fire and you think everything else is correctly wired.With modern technology, capacitors with the same voltage rating and much higher capacitance (uF) will probably fit easily.The voltage across the zener will be high enough to allow the SSR to turn on, but limit any excessive voltage due to momentary over-current.