Obtain 0.3 amps, 0-25 Vrms AC signal at 50 Hz?

[tpj]

what is 25 vrms

I want to apply a 0-25 Vrms AC signal at 50 Hz capable of sourcing 0.3 Amps across the primary windings of a ferrite ring.

Kindly suggest me economical and convenient ways to do the above.

I thought of using step down transformers or current boost circuit. Kindly provide your thoughts on the same.

I have a function generator with 20 Vpp output at open circuit and having 600 ohm output impedance. What essential additions can I make to obtain the desirable current of 0.3A as the function generator would not source more than 10 mA.

Thanks!!!

-TPJ

 

[Chris56000]

0.3-amps

Hi!

A bridge-type power amplifier circuit based on two TDA2030/TDA2004 or similar ICs operating off 16-20V with a suitable series limiting resistor between the IC outputs and your ferrite ring primary ought to do it! I'm sure I've got a ready-made idea in my Elektor project books somewhere - I'll look tonight!

Chris Williams