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Search: Posts Made By: Dupe
Forum: Renewable Energy 07-28-2015, 08:02 PM
Replies: 887
Views: 205,292
Posted By Dupe
Very sensible advice

Very sensible advice
Forum: Renewable Energy 07-02-2015, 05:38 PM
Replies: 23
Views: 8,889
Posted By Dupe
The circuit breaker is a current balanced system...

The circuit breaker is a current balanced system where the current drawn from the AC plus side is returned through the AC neutral. However if that balance is disturbed by a current leakage to ground,...
Forum: Renewable Energy 06-29-2015, 07:41 PM
Replies: 204
Views: 34,955
Posted By Dupe
I like your collection of circuit boards, parts...

I like your collection of circuit boards, parts come in useful for projects. Used to repair industrial 100A plus charger boards the ones beyond repair come in useful...toroid coils etc.
I have a...
Forum: Renewable Energy 06-29-2015, 07:29 PM
Replies: 204
Views: 34,955
Posted By Dupe
Hi Mickey, suggested using resistors only to...

Hi Mickey, suggested using resistors only to initially assist in balancing and matching up both channels. you can remove them once each channel has been matched. Just measure the voltage across the...
Forum: Renewable Energy 06-28-2015, 04:37 PM
Replies: 204
Views: 34,955
Posted By Dupe
Mikey, i would use a very low value resistance in...

Mikey, i would use a very low value resistance in series with the oscillators output and input to load. same for each channel. Then either use an analogue test meter on the lowest voltage DC range or...
Forum: Renewable Energy 06-25-2015, 07:05 PM
Replies: 204
Views: 34,955
Posted By Dupe
Hi Mikey, have a look at this site: TVS Diodes...

Hi Mikey, have a look at this site:
TVS Diodes | Surface Mount Diodes - Littelfuse (http://www.littelfuse.com/products/tvs-diodes.aspx#option6)
With any batteries that are dried out the impedance...
Forum: Renewable Energy 06-20-2015, 08:07 PM
Replies: 204
Views: 34,955
Posted By Dupe
Hi Guy's, I've spent many happy hours in the past...

Hi Guy's, I've spent many happy hours in the past building several different versions of these chargers one of which is in regular use that I put together approximately 6 years ago.
My design uses 4...
Forum: Renewable Energy 06-17-2015, 09:46 PM
Replies: 204
Views: 34,955
Posted By Dupe
Pity the commentary is not in English! Very neat...

Pity the commentary is not in English! Very neat build though. Yes there are some differences... noting the two inductors and two semiconductors.
Forum: Renewable Energy 06-10-2015, 06:59 PM
Replies: 204
Views: 34,955
Posted By Dupe
Nice one Mikey...much better idea to trim...

Nice one Mikey...much better idea to trim precisely your reference voltages.
Your more recent SSG circuits show a cap bank of 10x5000uf, just remind me of how you're dumping the charge into you...
Forum: Renewable Energy 06-04-2015, 09:42 PM
Replies: 204
Views: 34,955
Posted By Dupe
Hi Mikey, have a close look at the thyristor...

Hi Mikey, have a close look at the thyristor trigger point with your scope. You may have to experiment with values to achieve adequate filtering of stray spikes, an RC network may be of benefit. Also...
Forum: Renewable Energy 06-03-2015, 06:46 AM
Replies: 204
Views: 34,955
Posted By Dupe
Hi Mikey, just a couple of points. Firstly how...

Hi Mikey, just a couple of points. Firstly how are you monitoring your battery charging current! also I run a separate feedback wire directly from my batteries under charge. When your topping off at...
Forum: Renewable Energy 06-02-2015, 08:43 PM
Replies: 204
Views: 34,955
Posted By Dupe
Mikey are you currently using your SSG board 3...

Mikey are you currently using your SSG board 3 charger. I notice this shows a 14v run battery how have you configured it?
Forum: Renewable Energy 06-02-2015, 08:27 PM
Replies: 204
Views: 34,955
Posted By Dupe
Hi Mikey, My circuit is based on monitoring the...

Hi Mikey, My circuit is based on monitoring the voltage as seen on the battery being charged i.e. 12v / 24v etc. Preventing an over voltage situation occurring. I kind of understand what you are...
Forum: Renewable Energy 05-30-2015, 09:37 PM
Replies: 4
Views: 1,132
Posted By Dupe
Thanks for your reply Donald, will take a look....

Thanks for your reply Donald, will take a look. Cheers Dupe
Forum: Renewable Energy 05-29-2015, 06:19 PM
Replies: 4
Views: 1,132
Posted By Dupe
Hi Donald, looking forward to more information...

Hi Donald, looking forward to more information etc. Have done several experiments using alternative charging techniques in the past. I seldom use my cap discharger which consists of 4 x 10,000uF caps...
Forum: Renewable Energy 05-25-2015, 05:27 PM
Replies: 204
Views: 34,955
Posted By Dupe
Good point... Ultra fast switching diodes should...

Good point... Ultra fast switching diodes should be used for all HF applications with these and similar circuits.
Forum: Renewable Energy 05-25-2015, 05:11 PM
Replies: 204
Views: 34,955
Posted By Dupe
Yes these oscillator circuits can create some...

Yes these oscillator circuits can create some hefty transient switching spikes rich in harmonics. Board layout also effects circuit stability, and a significant influence on other components and...
Forum: Renewable Energy 05-24-2015, 07:12 PM
Replies: 204
Views: 34,955
Posted By Dupe
Your very welcome Mikey, well done. By the way...

Your very welcome Mikey, well done. By the way just waiting a delivery of Alum to convert some of my batteries! Cheers Dupe:cheers::cheers:
Forum: Renewable Energy 05-12-2015, 05:42 PM
Replies: 204
Views: 34,955
Posted By Dupe
BroMikey's SSG

Just had a thought about your spikes!! you can get transient suppression diodes that will conduct above a given clamp voltage, might be worth looking into to add further protection. Hve a look here:-...
Forum: Renewable Energy 05-12-2015, 05:33 PM
Replies: 204
Views: 34,955
Posted By Dupe
OK Mikey... should work fine, I always build my...

OK Mikey... should work fine, I always build my designs on bread board first before knocking up a circuit board this gives me a chance to trim values if necessary. If you have a variable PSU all the...
Forum: Renewable Energy 05-11-2015, 08:56 PM
Replies: 204
Views: 34,955
Posted By Dupe
@ BroMikey This is my alternative crowbar...

@ BroMikey
This is my alternative crowbar circuit, the transistor is BC547 / BC182 and zener is 500mW details are open to experiment and a gate resistor can be included to suit device in use. two...
Forum: Renewable Energy 05-11-2015, 08:37 PM
Replies: 204
Views: 34,955
Posted By Dupe
Basic Crowbar Circuit

@ BroMikey
Hi have put together a circuit you can try out, just need to post the image over... have not got a clue how to send it on this site?

OK have worked out how to send a thumb nail image...
Forum: Renewable Energy 05-10-2015, 07:50 PM
Replies: 204
Views: 34,955
Posted By Dupe
SG oscillator

Hi Mikey, You've got everything under control and well protected, if I may make a suggestion I would use a resistive potential divider network to the gate of the control thyristor offering a more...
Forum: Renewable Energy 05-07-2015, 07:57 PM
Replies: 204
Views: 34,955
Posted By Dupe
Battery charging techniques

I've been experimenting with various charging circuits on and off for some time, have used 555 timers as the drive oscillator and also SSG designs. I came across big meaty ferrite inductors from...
Forum: Renewable Energy 05-03-2015, 08:14 PM
Replies: 204
Views: 34,955
Posted By Dupe
battery charging

@ Bro Mikey, refreshing to see somebody designing simple easy and reliable circuits such as yourself... old school stuff. Compared with conventional charging methods how do you compare these...
Showing results 1 to 25 of 95

 

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