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i've a doubt regarding damping ratio of systems with poles at origin. Like one 2nd order eqn. as below
This eqn seems to have zero natural frequency
I'm confused abt its damping ration..
ya..its charging. by the way, i'm not experiencing the problem everytime. mostly noise starts abt 15 minutes after switching on.
---------- Post added at 23:08 ---------- Previous post was at 23:04 ----------
sorry, i couldn't make out wot u meant.. i think noise comes at the supply...
as soon as i switch on my ups some ticking noise is coming from it. even
before i connect the load. bt, it works well on battery, when supply is
disconnected.i disconnected all other loads in my home and still the problem
persists... somebody help me.
1st, i'm not a PE pro
2nd, i can't see your attachment..
though i can say these energy harvesting ckts require large enough 1mF capacitors..
don't know whats the need of connecting zener in series.. series with wot?
i too agree with tahmid.. this i/p voltage range s indeed frightening..and i'd say your size concern is also doubtful. with converter inductor, obvious transformer switches and their heat sinks..if you 're using micro that can also be a concern. then i suggest to do the pcb design from...
oh..got the point.
but, if 'body connected to neutral is the situation', then isn't it enuf to check continuity?
or..i think it'd be bettr use the fact that neutral always has some potential greater than earth. design a simple ZCD or high gain amplifier and in its output, connect a bulb. if...