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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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power supply....
Hi!
Would appreciate some help. Was thinking of using a car radio at home. Specs read current consumption 1.5A (at .5W). The fuse is 5A. DC power supply should be at least 1.5A but can I go up to 4A without harming the radio? Not sure if I would gain any improvement in sound. Thanks! Please cc: my email address if possible. Louis |
#2
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power supply....
In article
, lou wrote: Hi! Would appreciate some help. Was thinking of using a car radio at home. Specs read current consumption 1.5A (at .5W). The fuse is 5A. DC power supply should be at least 1.5A but can I go up to 4A without harming the radio? Not sure if I would gain any improvement in sound. Should be ok. Remember car stuff is designed to work best at 13.8 volts rather than 12. Using the lower voltage will reduce the maximum power from the amplifier. But power supplies designed for exactly this purpose are readily available. Your biggest problem might be connecting the radio unit to an aerial. Please cc: my email address if possible. No. This is a newsgroup. -- *Warning: Dates in Calendar are closer than they appear. Dave Plowman London SW To e-mail, change noise into sound. |
#3
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power supply....
lou wrote:
Was thinking of using a car radio at home. Specs read current consumption 1.5A (at .5W). The fuse is 5A. DC power supply should be at least 1.5A but can I go up to 4A without harming the radio? Yes. Try for 13.8v, though. Not sure if I would gain any improvement in sound. No. |
#4
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power supply....
On Jan 27, 4:43 am, lou wrote:
Hi! Would appreciate some help. Was thinking of using a car radio at home. Specs read current consumption 1.5A (at .5W). The fuse is 5A. DC power supply should be at least 1.5A but can I go up to 4A without harming the radio? Not sure if I would gain any improvement in sound. Thanks! Please cc: my email address if possible. Louis The radio will only drawl the amount of current it needs (about 1.5A) even if you use a 4A or larger capacity power supply. That might change if you crank the voltage much higher than the nominal 13.8V others have mentioned but then you stand to damage the radio. No matter what voltage you apply to the radio it won't make it sound better but better speaker/s might. Rush |
#5
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power supply....
"rush14" wrote in message ... On Jan 27, 4:43 am, lou wrote: Hi! Would appreciate some help. Was thinking of using a car radio at home. Specs read current consumption 1.5A (at .5W). The fuse is 5A. DC power supply should be at least 1.5A but can I go up to 4A without harming the radio? Not sure if I would gain any improvement in sound. Thanks! Please cc: my email address if possible. Louis The radio will only drawl the amount of current it needs (about 1.5A) even if you use a 4A or larger capacity power supply. That might change if you crank the voltage much higher than the nominal 13.8V others have mentioned but then you stand to damage the radio. No matter what voltage you apply to the radio it won't make it sound better but better speaker/s might. Rush Although the nominal vehicle voltage is 13.8v, it is not at all unknown for the charging system to go well beyond the accepted maximum of 14.2v - sometimes as high as 15v. Any vehicle based radio should be able to withstand up to 16 or 17v, without complaint. CB power supplies are plentiful and cheap, and are specifically designed to power vehicle based radios, in a home environment. Arfa |
#6
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power supply....
"lou" wrote in message ... Hi! Would appreciate some help. Was thinking of using a car radio at home. Specs read current consumption 1.5A (at .5W). The fuse is 5A. DC power supply should be at least 1.5A but can I go up to 4A without harming the radio? Not sure if I would gain any improvement in sound. You can't hurt something by having more current available, the radio will only draw what it needs. Car batteries are capable of hundreds of amps for short periods. |
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