Waveshaper

The "5Pulser" waveshaper produces a train of pulses whose number (and widths) are varied with a control voltage. At the lowest control voltage a single square wave is put out, whereas at the highest voltage a train of 5 pulses spanning less that half of the total wave period is produced.

http://www.elby-designs.com/contents/en-us/p397.html

• 10 mA +12V
• 5 mA -12V
• ? mA 5V
• 70 mm Depth

No info about availability.