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Registered Member #56
Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
If you use mosfets instead of bipolars for the totem pole you can capacitively couple the input signal into them and use it as a voltage amplifier as well as a current amp.
Although for the added complexity of getting that all to work without blowing up the top fets gate at turnon and to keep them both exploding from shoot-through, you are probably better off just adding the little class A amp like Arcstarter shows (although keep in mind that won't work well with fets in the totem pole, bipolar are much better due to the lower capacitances). Just make sure that the pullup resistor has enough juice to force the lower transistor into saturation.
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Amplifier for GDT driver
(those <> are mistake, both E and C should be turned around)
