The function generator is certainly more reliable than ... and following that is an NE5532 dual op-amp that presumably handles the amplitude and DC offset. Finally there is an ICL7660 switched ...

In general, you get what you pay for, and when [Craig] picked up a cheap function generator off eBay, he didn’t expect much from it. But as he shows us in his blog post and a series of videos ...

This battery operated function generator, encased in a rugged high visibility shell ... Cable 3 foot cable with stainless steel armor to connect signals to a charge amplifier. Twisted, shielded low ...