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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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I got a digital timer and is it ok to drive mini transformer radio ?
Conventional loud alarm clocks dont wake me. So, I want to turn on a loud radio with it. It is a small cassette boombox. Or should i just stick to incandescent lights only ? It says " dont turn on motors with it " They didnt have mechnical timers, except "randomn" week long ones. It would take 1 day at least, to find my old mechanical switch output timer, buried in a box somewhere. thanks, tim |
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"Tim Kett" wrote in message news:01c5117d$cf464400$53e2e104@toni... Conventional loud alarm clocks dont wake me. So, I want to turn on a loud radio with it. It is a small cassette boombox. Or should i just stick to incandescent lights only ? It says " dont turn on motors with it " They didnt have mechnical timers, except "randomn" week long ones. It would take 1 day at least, to find my old mechanical switch output timer, buried in a box somewhere. thanks, tim I would be suprised if it cant handle the current to feed the boombox. Go for it. Switching a motor is another thing !! -- Regards ..... Rheilly Phoull |
#3
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"Tim Kett" wrote in message news:01c5117d$cf464400$53e2e104@toni... Conventional loud alarm clocks dont wake me. So, I want to turn on a loud radio with it. It is a small cassette boombox. Or should i just stick to incandescent lights only ? It says " dont turn on motors with it " They didnt have mechnical timers, except "randomn" week long ones. It would take 1 day at least, to find my old mechanical switch output timer, buried in a box somewhere. thanks, tim It should be fine, go ahead and use it. Another option is to wire a latch circuit and relay to the speaker in a clock radio and use the alarm to trigger something louder or a bright light. I've seen overpriced "dawn simulators" that are nothing but a metal halide lamp and ballast on a timer, you could pick up a 100W or so metal halide flood on ebay and use that, the gradual warmup does gently wake you and it gets bright enough to wake up a stubborn sleeper. |
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"James Sweet" writes:
"Tim Kett" wrote in message news:01c5117d$cf464400$53e2e104@toni... Conventional loud alarm clocks dont wake me. So, I want to turn on a loud radio with it. It is a small cassette boombox. Or should i just stick to incandescent lights only ? It says " dont turn on motors with it " They didnt have mechnical timers, except "randomn" week long ones. It would take 1 day at least, to find my old mechanical switch output timer, buried in a box somewhere. thanks, tim It should be fine, go ahead and use it. One issue may be the keep-alive current they use. Probably not a problem with a cassette player but who knows? --- sam | Sci.Electronics.Repair FAQ Mirror: http://repairfaq.ece.drexel.edu/ Repair | Main Table of Contents: http://repairfaq.ece.drexel.edu/REPAIR/ +Lasers | Sam's Laser FAQ: http://repairfaq.ece.drexel.edu/sam/lasersam.htm | Mirror Sites: http://repairfaq.ece.drexel.edu/REPAIR/F_mirror.html Note: These links are hopefully temporary until we can sort out the excessive traffic on Repairfaq.org. Important: Anything sent to the email address in the message header above is ignored unless my full name is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs. Another option is to wire a latch circuit and relay to the speaker in a clock radio and use the alarm to trigger something louder or a bright light. I've seen overpriced "dawn simulators" that are nothing but a metal halide lamp and ballast on a timer, you could pick up a 100W or so metal halide flood on ebay and use that, the gradual warmup does gently wake you and it gets bright enough to wake up a stubborn sleeper. |
#5
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In article 01c5117d$cf464400$53e2e104@toni,
"Tim Kett" wrote: Conventional loud alarm clocks dont wake me. So, I want to turn on a loud radio with it. It is a small cassette boombox. Or should i just stick to incandescent lights only ? It says " dont turn on motors with it " The only thing that could go wrong is that the solid-state switch in the timer couldn't turn off the transformer after it turned it on -- that's usually the problem with motors. If that happens, you can probably deal with it by having the switch turn on a 60 to 100 watt table lamp at the same time as the radio. The resistive load from the lamp would swamp the transformer's inductance -- which would be what caused the problem. Note that you have to use an incandescent lamp, not any kind of fluorescent. Or, you could turn on your coffee maker at the same time as the radio, assuming the switch is rated for that much power. Isaac |
#6
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Isaac Wingfield wrote in article
... In article 01c5117d$cf464400$53e2e104@toni, "Tim Kett" wrote: Conventional loud alarm clocks dont wake me. So, I want to turn on a loud radio with it. It is a small cassette boombox. Or should i just stick to incandescent lights only ? It says " dont turn on motors with it " The only thing that could go wrong is that the solid-state switch in the timer couldn't turn off the transformer after it turned it on -- that's usually the problem with motors. If that happens, you can probably deal with it by having the switch turn on a 60 to 100 watt table lamp at the same time as the radio. The resistive load from the lamp would swamp the transformer's inductance -- which would be what caused the problem. Note that you have to use an incandescent lamp, not any kind of fluorescent. Or, you could turn on your coffee maker at the same time as the radio, assuming the switch is rated for that much power. Isaac Thats the way I have it - with 100 watt bulb and loud radio, and it works ! :-) Thanks all !!! :-) |
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