Try this. It might distort a little at higher frequencies, but 1Hz will be fine. Make sure you choose reasonably beefy transistors, because each will dissipate up to about 2W peak, 1W average, for a resistive load. If your load is very inductive this could be higher.
The op-amp is going to have to supply 10mA or so of current to the transistor bases, so it's going to get a little warm also! The TL082 might struggle a bit to supply that - if so, make the two transistors darlington types, to reduce the load on the opamp.
If you omit the feedback from the transistors' emitters, what you have is effectively a power op-amp, the output being the transistor emitters, and the inputs being the usual inverting and non-inverting inputs of the op-amp. It has a lot of cross-over distortion, but negative feedback will correct this. So, you'll probably be able to replace an op-amp in your waveform generator circuit with this circuit. The second circuit is a triangle wave generator with the integrating op-amp powered up in this way.
EDIT: Messed up circuit two - corrected and reposted