| ??? 03/29/08 02:55 Read: times |
#152699 - Come on! Responding to: ???'s previous message |
Asok said:
Can give a shock? By touching what? Everything is enclosed and sealed and LIVE is insulated by a plastic sheet and air gap 0.5 inch.So shock by touching what? I was refering to what YOU said: Asok said:
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. YOU talked about "touching CPU Vcc". Why did you make this comment, if it's irrelevant?? Asok said:
These with so high turns per volt and sooooo thin INSULATED wire and so little window for insulating secondary from primary are running HOT and hence in OUR CLIMATE are unreliable statistically.I use them daily in chinese gadgets... damm hot...but surprisingly yet to fail. This has nothing to do with using transformers. This trash isn't properly designed! Asok said:
I am not married to transformerless power supply and would be grateful if you would kindly give me names,details of best ultra small power transformers(230V to about three secondaries) PCB mounted and APPROVED. With pleasure: http://www.pulseeng.com/products/...007_44.pdf Approved and rated at 70°C ambient temperature! Should be enough, even where you live... Kai |
