A LFO using the ICL8038 for its nasty doing at low frequencies - different times at up & down of the waveform.
Frequence range from 0,6 to 6 Hz (fast) and 0,06 to 0,6 Hz at slow. Level sets the output level. Waveforms are sine and triangular.
Output voltage max.: 8 Vss (12V)

http://home.arcor.de/trouby-media/modular/3he/nasty_lfo.htm

• ? mA +12V
• ? mA -12V
• ? mA 5V

No info about availability.