Power Supply Voltage
Home › Forum › Ask A Member › Power Supply Voltage
- This topic has 27 replies, 11 voices, and was last updated 5 years, 5 months ago by outbdnut2.
-
September 27, 2018 at 6:05 pm #83617
Well, there’s your answer!
September 27, 2018 at 8:03 pm #83620Anyone else have a Merc O Tronic 98? What do they use for a power supply?
"Some people want to know how a watch works, others just want to know what time it is"
Robbie RobertsonSeptember 27, 2018 at 8:50 pm #83624So this one, rated at 2.93 amps, wouldn’t be a good choice for a 98 then?
https://www.ebay.ca/itm/GS25A07-P1J-Mea … Sw8D9bpiXl
mercuryman: How often would the rheostat need to be cranked right up and draw 6 amps?
September 27, 2018 at 9:24 pm #83628When you test a coil are suppose to be tested for a short period at full power. So every coil test I go full for about 5 seconds.
September 27, 2018 at 9:26 pm #83629CAUTION!……A rheostat cranked to max current (minimum resisatance) is same as a direct short on the battery. Leave it that way for too many seconds and the battery will self-destruct. Watch the wattage rating on the rheostat too, for example, If you have the rheostat set to draw 3 Amps at 7.2 volts, that is 21.6 Watts – the rheostat will get hot in a hurry – it is rated to dissipate that wattage? some are, some aren’t. With it cranked up to a dead short, all that heat is happening inside the battery – bad news.
I may have misunderstood – I assumed you were putting a rheostat directly on the battery with a current meter, and that’s all – if the rheostat you are talking about is in the Merc test instrument, disregard what I just said.
DaveSeptember 27, 2018 at 9:44 pm #83631Read the manual. Don’t run the test more than a few seconds…… just enough to get a reading with spark. longer will destroy the coil also. I use the Radio control Battery and charger last a long time between charges. would not go any other way.
October 1, 2018 at 3:24 pm #83812Hello Mumbles…I also have a observation here. The degree to which the advertised loaded voltage goes up during a no-load voltage is called regulation, and depending on the design of the power supply can vary from perfect regulation where no-load voltage equal to loaded voltage to absolutely dismal regulation where the NLV skyrockets.
October 1, 2018 at 3:28 pm #83813Wow. Just…wow.
So you’re very first post here is to plagiarize what I wrote in post #2??? That’s really, really weird.
October 1, 2018 at 3:40 pm #83814He may be agreeing with you and supporting you in your opinion.
Being new he may just be looking to participate.
- You must be logged in to reply to this topic.