When I was assessing surge protection for a RF output on a signal generator (in case it accidentally connected to a significant voltage), I found when measuring a MOV with a capacitance meter, it shows that MOVs can have significant capacitance, whereas gas arrestors have very little capacitance, of which some types in a catalog had a capacitance of about 1pF, which is ideal for most RF applications.
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My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics. -
Re: MOVs can have capacitance
If you look at the MOV spec, it will show the capacitance rating. Gas tube will be the way to go, but to find one at 1pF may be difficult.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
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http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809 -
Re: MOVs can have capacitance
Some low surge power ESD diodes can have sub 0.1pF capacitance, for example for HDMI transceivers. I wouldn't know if it is possible to make similar diodes for high surge power.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
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