- 2,169
- 3,614
- 113
- Location
- Pepperell, Massachusetts
If you need a MOV I'd be happy to mail you one.
PM me if interested.
PM me if interested.
Steel Soldiers now has a few new forums, read more about it at: New Munitions Forums!
Zed254,
This might help you understand what they are, how they work, and how to select the proper rated device for a circuit.I am trying to find the specs for the MOV. I tried viewing the manual in post #4 but it isn't working? The MOV's that some of you have listed as using in your units have different specs? Some higher and some much lower voltages? Please forgive my confusion I'm just trying to make sure I'm actually protecting the quad with the MOV and it isn't simply decorative!
130v sounds about right. You want the rating just over the working voltage of the circuit being protected. See the tutorial I posted....pretty informative.Zed254,
I have seen the specs for the ones for sale on Amazon, yet there in lies the confusion, the specs for those are:
Max allowable voltage A/C seems low? Others have used the radio shack part which is listed to replace V130LA20A and has a max A/C volatge of 130V. The 130 sounds right, but I'm trying to be sure.
- Resistor;Model : 14D151K;Max. Allowable Voltage : AC 95V
Its true, lots of devices have MOVs that are not correctly rated for the circuit they are supposedly trying to protect. Most of them being too great a voltage rating.Farmitall,
Very good read! Loved the part about "In general, MOV selection for the electrical protection of circuits from power supply transients and spikes is often little more than an educated guess." . I DID learn a lot about MOV's from this! Great help!
I followed kloppk's lead and mine have been working well on an 803 and an 802. Here is the data sheet: https://www.mouser.com/ds/2/54/ov14d-777765.pdf . The 14D151K is listed along with a bunch of others. Someone sharper than me in electronics will need to help you further.Zed254,
I have seen the specs for the ones for sale on Amazon, yet there in lies the confusion, the specs for those are:
Max allowable voltage A/C seems low? Others have used the radio shack part which is listed to replace V130LA20A and has a max A/C volatge of 130V. The 130 sounds right, but I'm trying to be sure.
- Resistor;Model : 14D151K;Max. Allowable Voltage : AC 95V
The MEP-802 and MEP-803, A1 volt regulators sometimes go bad. When they do, the Stator is often damaged. The troubleshooting diagram tells you to first test the stator. If you find that the stator is defective, naturally, you change it. So after installing the stator, you fire it up and presto! Another bad stator. Why? Because you fixed the symptom, not the cause. So to protect your stator, from a defective A1 volt regulator, and from destroying a second stator, (not cheap) you need to see if your MEP-802 and MEP-803 has been modified. In about 2007 the following PS magazine article was put out. The accompanying Volt Regulator test procedure came from TAACOM. In about 2009 or 2010 the military started to modify all existing MEP-802 and MEP-803's. But a lot never got done. Sadly, I cant find my copy of the Modification, but it follows the PS magazine article almost word for word, BUT it tells you to put a fuse in between Q1 AND Q2 to completely protect your stator from damage by a defective A1 Volt Regulator. This is a simple and cheap insurance for your generator. Later, should you find that a fuse to Q1 and Q2, (Quad Circuit) is blown, you can start on the real problem, the A1 volt regulator, and not have a unservable Stator to boot.
View attachment 601656View attachment 601655
My voltage regulator has a slot where you can go back-and-forthHere it is in my 802.
View attachment 602216
The circular blue disc is a MOV that I added to prevent the voltage spikes that can take out the diode bridge in the voltage regulator.
Here it is in my 802.
View attachment 602216
The circular blue disc is a MOV that I added to prevent the voltage spikes that can take out the diode bridge in the voltage regulator.
Thank you guyIf the rest of your generator is as clean as the last two pictures, you got a mighty fine generator set!
Thank youYes, its supposed to be different. Its NOT a relay. Its a switch.
GuyfangThank you
Sent from my iPhone using Tapatalk
You have a link for that resistorHere it is in my 802.
View attachment 602216
The circular blue disc is a MOV that I added to prevent the voltage spikes that can take out the diode bridge in the voltage regulator.
We get it, advertisements are annoying!
Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website like our supporting vendors. Their ads help keep Steel Soldiers going. Please consider disabling your ad blockers for the site. Thanks!