What common emiiter amplifier impedance?

[boylesg]

If I was to use the RF from a tesla coil to create a control signal and I wished to implement a common emitter amplifier to boost the voltage if it proves to be necessary, what would be the recommended input impedance for the amplifier?

 

[jiripolivka]

If you really want to "amplify" the Tesla-coil output, be aware that no transistor can survive the voltage peaks reaching several kV. Even using special HV vacuum tubes is doubtful.
Tesla coil is a pulse transformer, so increasing its output voltage is easy by adding secondary turns. Also tuning it to resonance will help.
BTW,typical RF transistor amplifier has an input impedance typically 20-50 Ohms, and e-b breakdown voltage is 6 to 50 V in reverse

 

[boylesg]

If you really want to "amplify" the Tesla-coil output, be aware that no transistor can survive the voltage peaks reaching several kV. Even using special HV vacuum tubes is doubtful.
Tesla coil is a pulse transformer, so increasing its output voltage is easy by adding secondary turns. Also tuning it to resonance will help.
BTW,typical RF transistor amplifier has an input impedance typically 20-50 Ohms, and e-b breakdown voltage is 6 to 50 V in reverse

You misunderstand. The purpose of the antenna and transistor is to produce a signal from the RF that is used to keep the tesla coil in tune while it is running. The only reason why the transistor would conduct HV is if there was a strike to the antenna which I would want to avoid.

 

[jiripolivka]

You misunderstand. The purpose of the antenna and transistor is to produce a signal from the RF that is used to keep the tesla coil in tune while it is running. The only reason why the transistor would conduct HV is if there was a strike to the antenna which I would want to avoid.

Then I do not see any purpose in using a transistor amplifier close to the Tesla coil. To indicate resonance one only needs a small one-turn pickup coil with a diode detector, located to get a suitable DC output that will peak at resonance.

 

[boylesg]

Then I do not see any purpose in using a transistor amplifier close to the Tesla coil. To indicate resonance one only needs a small one-turn pickup coil with a diode detector, located to get a suitable DC output that will peak at resonance.

I am unsure what sort of current I will get so I added the common collector amplifier just in case. I don't have to use it necessarily.