Description:
Electronics hobbyists and engineers.
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Acrylic caps at Farnell
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Hi to all, the latest thing in SMD caps is "acrylic" dielectric, stacked film - values up to 1uF are available in 1206 and 1210 size !!!! Said to be ideal for audio applications in lieu of hi-k ceramic or tantalum. Best of all, they are relatively cheap at about $ 0.35+ ea in quantity. [link]... more »
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Sony HCD-S500 DVD/Amp. Lines in picture.
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Sony HCD-S500 DVD player/surround sound amp. The unit would not turn on. The following caps were replaced:- c919, c928, c922, c929, c925 The unit now turns on and plays DVD o.k., but there are very fine lines in the picture. If I connect a video signal into the line input, I have the same problem. The rest of the caps on the power supply board have now been replaced,... more »
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BENQ Q9T4 monitor repair tip.
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BENQ Q9T4 LCD computer monitor. Power L.E.D. only lights briefly. Replace capacitors C712 1000uF 10v C707 and C708 1000uF 15v C703 and C704 470uF 35v Hope this helps someone. Russell.
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Interference
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Hi Recently I stayed in a motel in the Southern Highlands with my partner. I had cause to use the VoIP 'phone via a telstra card on my laptop and on connection (or maybe just before) I got a loud "squel" through my headphones & whipped them off. At the same time the television in the room went off. Nothing I could do would start it again. It wouldn't turn on. I... more »
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Capacities of C size NIMH batteries compared to AA.
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You now seem able to buy AA NIMH batteries with 2500 mAH capacities but similar branded C size Nimh batteries have only 4500 mAH. Given that the C battery is 4 times the volume of the AA something seems wrong here. Anyone seen NIMH C batterys with much more than 4500 mAH capacity.
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Qantas Incident & laptops
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[link] Yeah right, just like mobile phones ignite petrol pumps. The funny thing is people will actually believe this rubbish. Dave.
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Silicon LED ?
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** See ABSE for pics of a silicon NPN transistor chip emitting light. No trickery involved. The type is a 2N3439 ( high voltage NPN in TO5 pack) ..... Phil
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I'm excited - New heat sink stuff
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OK, maybe I'm preaching to the choir, but I had a specific problem this week. I needed to mount some TO-220 (uninsulated case) transistors on a metal chassis, without any drilling. After some searching, I found some stuff from Jaycar, for a surprisingly reasonable price. Part # NM2790. It's double-sided tape, thermally conductive and rated for 3,500 Volts and 250oC.... more »
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