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assuming that i have to design multiplier circuit on my own, i assume i would be needing high voltage diodes?You can use a tripler from an old black and white TV.
assuming that i have to design multiplier circuit on my own, i assume i would be needing high voltage diodes?
How much high voltage can be practically achieved using multipliers?
My input is 28V DC with a very low current. I am concerned whether by using doublers current will drop so low that it wont be enough for CRT.As much as you want, but starting from a lower voltage will obviously require a lot more components - you obviously will need high voltage (fast recovery) rectifiers and capacitors.
Can't you put an extra winding on the chopper transformer?.
"Very low current"My input is 28V DC with a very low current.
My input is 28V DC with a very low current. I am concerned whether by using doublers current will drop so low that it wont be enough for CRT.
Alright.. Silly it may be. Just trying to experiment with a high voltage power supply, by not using a flyback. Its a very old radar CRT and the input source is 28V but how much current the load is consumig? I do not know. I am just assuming the current req by any other CRT based displays. Had I known all the answers, I would not have asked.I would imagine if your input is only 'very low current' you haven't got a prayer
You mention 25,000V, so that suggests a colour CRT - EHT on those is normally limited to 1mA maximum, and 1mA at 25,000V is 25W - so probably well over an amp from your 'low current' 28V supply.
What are you trying to do?, usually with such 'vague' questions it's something 'silly', and either impossible or the complete wrong way of thinking about it.
So If i try to achieve high voltages through voltage multipliers, would that do? (And I'd be converting it back to ac at the end??)
I do not have any datasheet. I have this Schematic though, for CRT. However, no schematic for the Power Supply which provides 700V, 7KV and 25 kV. I have deigned a circuit for 700VDC. I even tried taking out 7kV and 25 kV from a flyback. But so far 25kV is an issue. Plus, flyback available in market are bigger than my required size (I am using a TLFA01365). Can i use a custom made flyback in smaller size?Do you have a schematic showing how the CRT was used?
OR
Do you have a data sheet for the CRT?
Most of the voltages are DC. The only AC is the video signal.
Though I am still not clear about the AC or DC requirements of a CRT. The heater and grids, do they consume AC or DC voltages. 25kV from a flyback goes straight to CRT so its AC.
Do you have the yoke? (deflection coils) (The coils on the neck of the CRT)
'could' be electro-statically deflected
Too many questions.fixed deflection coils,