🚀 go-pugleaf

Where (in a circuit) and why would the following be used:

1) Transient Voltage Suppressors
   Glass passivated Die, 1 psec response time, uni and bi directional,
   600 and 1500 watt peak pulse power dissipation, 
   made by Diodes Incorporated

2) SIDACtor transient surge protector
   The SIDACTor is normally connected between the high side of the circuit
   to be protected and common.  When the monitored voltage exceeds the 
   breakover (clamping) voltage, the SIDACtor switches on through a negative
   resistance region to a low on state voltage in nano seconds.  The SIDACtor
   is fastor than gas discharge, carbon arrestors and MOV's.
   Made by Teccor.

3) Interference Suppressor Capacitors
   Across the line, electromagnetic interference, isolation and line by-pass
   capacitors.

4) ZNR transient/surge absorbers (Panasonic)
   Zinc oxide non-linear resistors can be used in place of back to back
   zener diodes, protects against lightning, switching surges, noise spikes.

5) Other devices (surge supressors, etc) not listed here.

Specifically, I'd like to get rid of a power-line spike (5-10 volts, 
10-20 usec, on the neutral and hot, occurs about 45 degrees after peak and
valley) and is caused by a nearby speed-controlled AC motor in a laminar
flow fume hood.  I'd like to put some kind of device right at the power
receptical of this unit, but I'm not sure which one of the above devices
would be best, or would even work.  I'd like to eliminate this spike on the
neutral line, because I believe this spike is radiating EMI in our lab.

Any ideas?