hello
I have a velleman signal generator kit that I have put together and it works fine but only gives 100mv pk-pk.

is there any way I could adjust it to give 1v pk -pk?

im thinking its just changing a few resistors though my circuit analysis isn't very good and im not to sure what to change. its a basic 555 circuit that gives sine, saw, square and another(cant remember the name)

I will try to attach a schematic I found on google

any help or advice would be great

thanks
simonView attachment manual_mk105.pdf

 

Increasing the signal from 100mV to 1V requires an amplifier with a gain of 10.
You cannot achieve this by simply changing resistors in the circuit.

 

if I put an amplifier after it, that would increase it but would it do anything to the waveforms?

 

use an op amp like this, the wave forms will only alter at the high kilohertz.

 

any help or advice would be greatView attachment 66438

Since your circuit single supply based you must do something like the
AC Coupled Non-Inverting Amplifier figure (page 15) in this datasheet
http://www.solarbotics.net/library/datasheets/LM124.pdf

 

Won't this need a negative power supply for the op amp if he wants to maintain he signal properly?

In which case he would need two batteries or a rail splitter circuit.