| ??? 03/26/08 20:23 Read: times |
#152584 - Thanks Responding to: ???'s previous message |
Hello Everybody,
Erik asked what 'common' or is it that the display is remote?
Erik sincerely,I am confused about what was that you wanted to know when you wrote ...please answer questions Otherwise I think our wavelengths are matching.Kindly come again and please,I f you don't mind, no typing mistakes this time, please.Yes the displays are on top console and not on PCB...so only for them 11 wires/pin connectors(ralemate?) but although the tactile switches are already placed on the top console as per user's choice the decision about whether they are parallel or not is yet to be taken. No, regarding connectors I was asking the current capacities of say 25 pin D (parallel port) for interfacing the externals connections,theoritically again 11 in numbers but practically for cable laying convenience 10x2.Thanks. Kai asked .
....a transformerless supply for your IR receivers. Does that mean, that you have no galvanic isolation to mains there? This would explain, why you want to use a relay to inform your master electronics. Relay solenoid is driven by Mains near neutral since here there is no sensitive triac.In this case if mains polarities,LIVE and NEUTRAL,are not reversed even touching CPU Vcc will not give shock.These equipments has to be installed by the manufacturers. Secondly relay contact points are supposed to be galvanically isolated from solenoid potential specially in a sealed relay.Notices like "Dangerous Mains voltage inside"..."No user servicable parts inside" and connecting diagrams are printed on the enclosure. Actually I always wanted to supply the circuit diagram along with any anything electronic.Throughout my learning period Philips and Sony always used to do so otherwise it would have been M.R.T.P. violation on their part and othewise I could not learn anything and nobody could service those sets.Nowadya alas no such circuits are available along with the purchase. With best regards A.S.Rudra |
