Help for ELF (extreme low frequency) design

[electronicNovice]

I wanted to design circuit that outputs extreme low frequency, between 4hz and 10Khz. I want to use microprocessor. I have found some microprocessors that outputs that kind of frequency. The problem is the amplitude of the signal. Has to be around 10-12V. Usually the microprocessor outputs 5V. Any idea how can I go with this design and what microprocessor to use.
Thanks

 

[Harald Kapp]

Any idea how can I go with this design and what microprocessor to use.

4 Hz ... 10 kHzz can be generated by various means. If you opt for a microcontroller: (almost) any microcontroller will happily generate a signal in this frequency range.
As for amplitude: use an amplifier. Circuits for amplifiers that work well in this frequency range can be found on the internet.

 

[WHONOES]

What sort of waveform do you want to generate?

 

[electronicNovice]

square waveform.

 

[BobK]

What is the load?

BobK

 

[WHONOES]

The ubiquitous 555 would do that easily over the voltage range you quote and, it is easy to vary the pulse width if desired.

 

[kellys_eye]

Just purchase a bog standard audio signal generator.

Most have outputs that go to 15V (or more), range from 0.01Hz to 100kHz and have sine, square and sawtooth waveform outputs.

 

[WHONOES]

Just purchase a bog standard audio signal generator.

Most have outputs that go to 15V (or more), range from 0.01Hz to 100kHz and have sine, square and sawtooth waveform outputs.

Perfectly true.