3fp7

[timmy]

Originally Posted by N2IXK

You can INCREASE the deflection voltages applied to the vertical and horizontal plates, or DECREASE the total accelerating voltage to get increased deflection (at the expense of brightness and possibly focus).

How exactly would I increase voltage from hv ?

[Electronic M]

Originally Posted by timmy

How exactly would I increase voltage from hv ?

You do not raise the HV. You raise the deflection output amplitude. Or you REDUCE the HV. Either or a bit of each would work.

[jr_tech]

Unfortunately, the voltage that drives one of the deflection amplifiers is derived from the high voltage supply, so reducing the hv to increase the deflection sensitivity will also adversely affect the deflection in the vertical axis.
A real catch 22 situation.

jr

[timmy]

Originally Posted by Electronic M

You do not raise the HV. You raise the deflection output amplitude. Or you REDUCE the HV. Either or a bit of each would work.

Ok I lowered the hv and it did expand but not enough so how would I raise the verticle and horizontal deflection output. The simple way if possible I would not want to do a major mod.