Question about Voltage Amplifier

May 16, 2005 3 Replies
D

Hi...I need some advice about voltage amplifier. I want to amplify input signal to 100Vpp. The input signal is 5 Vpp sine or cosine signal and bandwidth is under the 20Mhz. Simple scheme is in the below.



+5V(DC) +100V or Over | | ------- --------- ---------------------- |source |-----|Amplifier|--------|Load(about 10Mohm~Over| ------- --------- ---------------------- | | -5V(DC) -100V or Over

If somebody knows a simple device for Amplifier, please let me know.



Vote
Twitter Facebook LinkedIn
B

Use a transformer.

Regards, Bob Monsen
Vote
Twitter Facebook LinkedIn
D

Sure, simply I can use a transformer. But I want to adjust output voltage range between 0 to 100 Vpp.

Vote
Twitter Facebook LinkedIn
C

Mr. Monsen's idea is best. Use a transformer, and vary the amplitude of your 5V pk. signal to the transformer primary to get 0-100V pk. at the secondary.

By the way, you might also want to take load capacitance into consideration. Even 10pF of load capacitance will dissipate watts of power at the frequencies of interest.

Good luck Chris

Vote
Twitter Facebook LinkedIn

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required