Meade LX200R-8 Nexstar 6SE AT80EDTA on Minitower Lots of glass, aluminum, and plastic Arctic origin - http://www.youtube.com/watch?v=wAx58lIynfY&feature=player_embedded#! Weather station - http://classic.wunderground.com/weatherstation/WXDailyHistory.asp?ID=KFLKENNE... 73s de KF4JU
18" F/5 Home-Built Dob. with Mike Dudley Mirror 6" F/15 Brass w/ D&G Lens on DS-16 Mount DS-10 10" F/4.5 Newtonian LXD650 and LX200 Classic Autostar Converted! 11x80 Meade (Vintage Japan Made). A few Naglers and 8mm and 13mm Ethos. Gadgets and parts everywhere.
Dark Arts Observatory - Brockport, NY - Skyshed POD XL5 with iOptron iEQ45 Mount
Scopes: C8, C5, SV110 ED, EON-72 ED, ST 80, ATRC6, Megrez 90
Tele Vue-85 Meade 8" SCT Nova Hitch Berlebach UNI 24 Meade 12" LightBridge Orion ED100 Losmandy GM-8 Orion SVP Quarter Hitch
Quote:Usually, devices are designed with a range of acceptable voltages. My guess is, since the adapter you bought is made by Vixen, for a Vixen product, that the voltage range for the controller is something like 9v-15v. It is well known that a 12v lead acid battery can produce up to 14volts, so I'm sure they designed it with that in mind.The heat you are feeling is probably a regulator circuit that is built into the controller. It is doing it's job by reducing the incoming voltage to the 9 volts required to actually run the device. Will the added heat reduce the life of the controller? Perhaps. If you're concerned, I would call them and see what they say.-Dan
Quote:I just bought a Vixen cigarette lighter adapter to power my SD-1 single axis controller. The controller comes with a battery pack for x6 1.5V C sized batteries for a total of 9VDC. Well the cigarette lighter adapter is measuring over 13V and although Vixen says it's for use with the SD-1 controller, I would rather not burn it out or shorten it's lifespan.I would like to install a resistor to drop the voltage to 9V. Can someone help me calculate what resistance I need to make that drop? TIA.
Uncle Rod Uncle Rod's Astroblog: http://uncle-rods.blogspot.com/
Quote:For about $1 and a little bit of time you can use a 7809 9 volt regulator. It will handle one amp of current and that should be plenty enough for your application. These are available at Radio Shack, Fry's, etc.Here is a simple circuit using the 7809:
6'' Orion SkyQuest f/5 12.5" Astrotel truss dob f/3.3 20" Super FXQ Starmaster William Optics 80mm ZenithStar ED II 1855/2500 Observing sessions grand total for 2013, 49. So far in 2014, 14
Quote:So let me see if I have this story straight. First of all you have Product A. Then you bought Product B, that the company of Product A says is for using with Product A. Then you say you want to modify Product B (can you say "Void Warranty?") and then plug it into Product A. (also pronounced "Void Warranty")Am I reading this correctly?Bill
--------------------Clear Skies, PJ Refl.- 203/1420; Refr.- 110/616, 75/500; Bino.- 15X60, 10X50, 8X30 __________________________________________________