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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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hey everyone, i was just wondering if there's a way to not use the
batteries on this light that i have and use an adapter of some sort, or would i even need an adapter? I think it's an LED light that changes colour and i would like to keep it up permanently. I'm not sure what batteries it uses, but the back of them says LR44 button cell. Thanks in advance everyone! |
#2
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On Feb 26, 9:43 pm, wrote:
hey everyone, i was just wondering if there's a way to not use the batteries on this light that i have and use an adapter of some sort, or would i even need an adapter? I think it's an LED light that changes colour and i would like to keep it up permanently. I'm not sure what batteries it uses, but the back of them says LR44 button cell. Thanks in advance everyone! How many batteries does it use? I think the LR44 is a 2V battery, so if it uses two LR44's you would need a 4V DC wallwart type of adapter, with a current of 100 milliamperes or more to power the light. H. R. (Bob) Hofmann |
#3
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On Feb 28, 12:00 pm, "hr(bob) "
wrote: How many batteries does it use? I think the LR44 is a 2V battery, so if it uses two LR44's you would need a 4V DC wallwart type of adapter, with a current of 100 milliamperes or more to power the light. Just popped in to the Radio Shack website. They sell a 300 milliamp regulated wallwart with switchable output voltage from 1.5 to 12 volts for $18 or so. Of course with those, you gotta be careful you don't accidentally switch it to a higher voltage than your device can tolerate. Jerry |
#4
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![]() wrote in message oups.com... Just popped in to the Radio Shack website. They sell a 300 milliamp regulated wallwart with switchable output voltage from 1.5 to 12 volts for $18 or so. Of course with those, you gotta be careful you don't accidentally switch it to a higher voltage than your device can tolerate. My local Dollar and More store sells those for $8. They also sell a 2.1 amp digital camera model (with specific voltages) for the same! |
#5
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"Homer J Simpson" writes:
wrote in message oups.com... Just popped in to the Radio Shack website. They sell a 300 milliamp regulated wallwart with switchable output voltage from 1.5 to 12 volts for $18 or so. Of course with those, you gotta be careful you don't accidentally switch it to a higher voltage than your device can tolerate. My local Dollar and More store sells those for $8. They also sell a 2.1 amp digital camera model (with specific voltages) for the same! Also note that these are often not regulated. So, the actual output voltage at any given setting will depend significantly on the load. If being used to power s decive that expects a fixed voltage, start low while measuring the voltage and then work up grom there. Or, get a regulated adapter. --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/ Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/ +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs. |
#6
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![]() "Sam Goldwasser" wrote in message ... Also note that these are often not regulated. So, the actual output voltage at any given setting will depend significantly on the load. If being used to power s decive that expects a fixed voltage, start low while measuring the voltage and then work up grom there. That's what I do. Start off low and crank it up until it works/charges. -- .. -- .. .. .. .. .. .. .. .. -- |
#7
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#8
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![]() Thanks for all the suggestions everyone! Yup it does use 3 LR44 batteries. I actually have some adapters lying around with adjustable voltage, do i just cut the wires, set the appropriate voltage, and attach the 2 ends to the + and - in the battery compartment with electrical tape? Would that be a waste though? Maybe i should go check out my local dollar store to see what they got. Sorry I don't usually do these types of stuff so it might not sound like i know what i'm doing, thanks again! |
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