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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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Help wanted for repairing a battery heating system
Hello,
I have a battery pack of a skiboot heating system broken (from Therm'ic vendor). The battery pack consists in a 5.3V battery and a 3 positions switch enabling graduous heat in the feet. This is done thru an oscillator outputing to a component (looking like a transistor) serving like a power switch for the second circuit consisting in the 5.3V battery and some heating wire of 10 ohms. Everything is CMS. The burned component has "1AKM" written on top, but I can't find this reference while google'ing. Maybe some of you could help me find the exact reference or some equivalent. I can send a schema of the circuitry if required. Thanks in advance for your help, Renaud. |
#2
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Help wanted for repairing a battery heating system
Renaud Métrich wrote:
Hello, I have a battery pack of a skiboot heating system broken (from Therm'ic vendor). The battery pack consists in a 5.3V battery and a 3 positions switch enabling graduous heat in the feet. This is done thru an oscillator outputing to a component (looking like a transistor) serving like a power switch for the second circuit consisting in the 5.3V battery and some heating wire of 10 ohms. Everything is CMS. The burned component has "1AKM" written on top, but I can't find this reference while google'ing. Maybe some of you could help me find the exact reference or some equivalent. I can send a schema of the circuitry if required. Thanks in advance for your help, Renaud. Youre not giving us any of the info needed to identify it. NT |
#4
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Help wanted for repairing a battery heating system
On Tue, 19 Sep 2006 07:23:45 +0200 Renaud
wrote in Message id: : a écrit : Renaud Métrich wrote: Hello, I have a battery pack of a skiboot heating system broken (from Therm'ic vendor). The battery pack consists in a 5.3V battery and a 3 positions switch enabling graduous heat in the feet. This is done thru an oscillator outputing to a component (looking like a transistor) serving like a power switch for the second circuit consisting in the 5.3V battery and some heating wire of 10 ohms. Everything is CMS. The burned component has "1AKM" written on top, but I can't find this reference while google'ing. Maybe some of you could help me find the exact reference or some equivalent. I can send a schema of the circuitry if required. Thanks in advance for your help, Renaud. Youre not giving us any of the info needed to identify it. NT Hello, circuitry is available he http://millet.corp.free.fr/Circuit%20Thermic.pdf The component represented as a transistor (but again maybe it is not a transistor) is in the bottom right), connected to the 5.6K resistive capacity. Renaud. http://www.ortodoxism.ro/datasheets/...C859_860_4.pdf |
#5
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Help wanted for repairing a battery heating system
On Tue, 19 Sep 2006 07:23:45 +0200, Renaud
put finger to keyboard and composed: a écrit : Renaud Métrich wrote: Hello, I have a battery pack of a skiboot heating system broken (from Therm'ic vendor). The battery pack consists in a 5.3V battery and a 3 positions switch enabling graduous heat in the feet. This is done thru an oscillator outputing to a component (looking like a transistor) serving like a power switch for the second circuit consisting in the 5.3V battery and some heating wire of 10 ohms. Everything is CMS. The burned component has "1AKM" written on top, but I can't find this reference while google'ing. Maybe some of you could help me find the exact reference or some equivalent. I can send a schema of the circuitry if required. Thanks in advance for your help, Renaud. Youre not giving us any of the info needed to identify it. NT Hello, circuitry is available he http://millet.corp.free.fr/Circuit%20Thermic.pdf The component represented as a transistor (but again maybe it is not a transistor) is in the bottom right), connected to the 5.6K resistive capacity. Renaud. Since your load does not exceed 0.5A, you could use any NPN transistor with a low VCEsat, high hfe, and a 2A rating or better. You will find these kinds of transistors in remote controlled cars, for example. Some leaded types that come to mind are 2SC3420, 2SD1685, 2SC2270, and 2SD826. - Franc Zabkar -- Please remove one 'i' from my address when replying by email. |
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