Help converting simple schematic to 110v
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From: amdx on 28 Jun 2010 14:40 "Jim Thompson" <To-Email-Use-The-Envelope-Icon(a)On-My-Web-Site.com> wrote in message news:u9dh26p3jspqmh4v9q33l46iku5sjp4g53(a)4ax.com... > On Mon, 28 Jun 2010 16:07:31 +1000, John G <greentest(a)ozemail.com.au> > wrote: > >>On Sun, 27 Jun 2010 05:38:10 -0700 (PDT), Michael >><michael.haip(a)gmail.com> wrote: >> >>>On Jun 27, 6:30 am, "JosephKK"<quiettechb...(a)yahoo.com> wrote: >>>> On Sat, 26 Jun 2010 19:21:18 -0700 (PDT), Michael >>>> >>>> >>>> >>>> <michael.h...(a)gmail.com> wrote: >>>> >On Jun 25, 11:38 am, Michael <michael.h...(a)gmail.com> wrote: >>>> >> Hello, can someone help with converting a schematic from 230v to >>>> >> 110v? >>>> >>>> >> I came across a schematic for a bug zapper online. I'm interested in >>>> >> building the device but need help converting the components to 110v. >>>> >>>> >> Can someone identify appropriate resistors, capacitors and diodes? >>>> >>>> >> The schematic is available online >>>> >> at:http://webspace.webring.com/people/bt/tjaco/bugzap/zapper.html >>>> >>>> >> Thanks in advance. >>>> >>>> >> - Michael >>>> >>>> >Yet another question.... >>>> >>>> >Can anyone advise whether this circuit is designed for AC or DC... >>>> >does it matter? Also any thoughts on how many amps this will need? >>>> >>>> >Thanks. >>>> >>>> Strictly AC only. Total load should be less than 30/1000 of an ampere. >>> >>>Thanks very much for the help! >> >> >>It never ceases to amaze me! >>How many so called experts who, admitedly seem to know a lot about the >>theory of everyting, give a whole lot of complex advice about how to >>build and fix the simplest of electrical/electronic devices without >>any regard for the practicalities of either the fix or the safety of >>the outcome. >> >>And it is worst with the simplest of problems because useually the OP >>is too green to understand the dangers he is being led into. >> >>This current device is a prime case. Even the original 110volt version >> could be a deathtrap. >> >>John G. > > Yep. But consider the positive social aspects of natural selection > ;-) > > ...Jim Thompson There you go again! :-) MikeK
From: Tauno Voipio on 28 Jun 2010 16:04 Bert Hickman wrote: > Michael wrote: >> Hello, can someone help with converting a schematic from 230v to 110v? >> >> I came across a schematic for a bug zapper online. I'm interested in >> building the device but need help converting the components to 110v. >> >> Can someone identify appropriate resistors, capacitors and diodes? >> >> The schematic is available online at: >> http://webspace.webring.com/people/bt/tjaco/bugzap/zapper.html >> >> Thanks in advance. >> >> - Michael > > Simply double the number of stages in the multiplier (currently made up > of C1-C6 and D1-D6) and take the output from the end of the modified > multiplier. The capacitances in the cascade may need to be doubled. The lower voltage supply has to be changed into a voltage doubler, to keep the outputs the same. Depending on the configuration, the capacitor value may need change to keep the impedance and stored energy. And - as already mentioned - please take care that only the bugs get fried and not the users. -- Tauno Voipio tauno voipio (at) iki fi
From: Michael on 5 Jul 2010 18:15
I'd like to extend a very big thank you to everyone who has taken the time to respond to my original post. I've enjoyed reading every response posted. Although I'm sure this next question will likely draw some criticism, I'd like to gather opinion on how to calculate a suitable sized grid for this circuit. I suspect wire type, gauge and length are valid considerations and will have a bearing on the size (amps) of transformer required. Perhaps to start I need to determine the total length of wire in the grid and calculate it's resistance. Add in the resistance of the resistors in the circuit. Calculate amps required based on total resistance of the circuit and grid. Thoughts? Circuit: https://docs.google.com/leaf?id=0ByeTqxcQsAnPNGMxNTFmODUtODI5NS00ZmExLWI4YzgtN2VkMDQyMjhjODU5&sort=name&layout=list&num=50 |