document updated 18 years ago, on Apr 5, 2006

Max voltage

Use a cheap voltmeter, make assumptions about the duty cycle, and convert average voltage to max voltage
Oscilloscope
- Soundcard based oscilloscopes...
  - freeware software package
  - free-for-basic-functions software
  - freeware software
  - Input should be ±1.5v
  - External protection and such components: one, circuit (search for manual range switch)
  - tips for hooking up a magnetic head to the sound card, recommending use of zener protections.