[GreenKeys] Fusing Requirements for Loop (Model 26)?

[E.]

Also, thank you all for the education on DC fuses… not even my audio engineer wife knew about such ;p !  Ordered some 100ma DC fuses from Mouser last week… even though they are probably not necessary - the more protection is better peace of mind, in my opinion :) ~


> On Sep 18, 2019, at 11:32 pm, E. <hanyou at xsmail.com> wrote:
> 
> 
> I’ve used these fuses:
> 
> https://www.mouser.com/ProductDetail/littelfuse/0312062mxp/?qs=RpX4E3T4PRatEZ%252baqtg6Cg%3D%3D&countrycode=US&currencycode=USD
> 
> …with this cheap bench supply:
> 
> https://www.circuitspecialists.com/benchtop-power-supply-csi12001x.html
> 
> …using these fuse holders:
> 
> https://www.autozone.com/electrical-and-lighting/fuse-and-accessories/bussmann-agc-fuse-holder/32421_0_0
> 
> …without blowing a fuse.  Just noticed that the maximum rated voltage value for those fuse holders is 32vdc… but up to 250vac.  Too tired to think about it…..
> 
> 
>> On Sep 18, 2019, at 10:44 pm, hwhall at compuserve.com wrote:
>> 
>> Fie upon yon picofuses.  Verily, thou must desolderest and resolderest when anon they givest up ye magik smoke.  Leavest thou said Pico to yon de Gallo.
>> 
>> The local surplus store (still hasn't gone down but is taking on water, fast) has literally hundreds of pounds of 3AG & similar in wide range of values.  Like the song said, "I can get it for you wholesale."
>> 
>> Wayne
>> WB4OGM
>> 
>> -----Original Message-----
>> From: Ralph Mowery <rmowery28146 at earthlink.net>
>> To: 'Zach Zarzycki' <shardsofaperture at gmail.com>; greenkeys <greenkeys at mailman.qth.net>
>> Sent: Wed, Sep 18, 2019 9:25 pm
>> Subject: Re: [GreenKeys] Fusing Requirements for Loop (Model 26)?
>> 
>> They are easy to find if you know what  to look for.
>> 
>> Look for PICO fuses.  There are plenty on ebay.  Here is some 125 ma which is probably what you may want to start at.  If you try using some 60 some ma fuses they will probably blow like popcorn.
>> 
>> https://www.ebay.com/itm/QTY-20-125A-1-8A-125V-AXIAL-PICOFUSE-VERY-FAST-ACTING-275-125M-LITTELFUSE/121665969044?hash=item1c53db5b94:g:cXMAAOSwpdpVa0jM:sc:USPSFirstClass!28146!US!-1
>> 
>> Here are you r American brand name 63 ma fuses if you insist in trying.
>> 
>> https://www.ebay.com/itm/FUSE-BUSS-NEW-GMA-63-R-5-X-20-mm-FAST-ACTING-63-ma-125-volts-box-pack-of-5/163011534976?epid=9018371927&hash=item25f43ea080:g:lX8AAOSwFE9a2~Md
>> 
>> Here are some rated for 250 volts
>> 
>> 
>> https://www.ebay.com/itm/LOT-OF-5-NEW-Lf-S-T63mAL250V-LITTELFUSE-FUSES-250V-5mm-x-20mm-T-63mA-SLOW-BLOW/400849456673?hash=item5d547d4e21:g:LLAAAOSwm8VUw1Xu
>> 
>> Ralph ku4pt
>> 
>> 
>> From: greenkeys-bounces at mailman.qth.net [mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of Zach Zarzycki
>> Sent: Wednesday, September 18, 2019 9:43 PM
>> To: greenkeys at mailman.qth.net
>> Subject: [GreenKeys] Fusing Requirements for Loop (Model 26)?
>> 
>> I'm going to be setting up my model 26 with a laptop power supply, eBay boost converter (boost to 97v) resistor for my loop supply (60mA) and the usb/tty board (Thanks Jordan!) 
>> 
>> I'm trying to find a good supply of the 63mA dc fuses to run this, I'm not trying to burn up my magnet, and don't really know if say 100mA fuse would work or if the magnets are so delicate that I should just keep looking for that "right" fuse. 
>> 
>> DC fuses are as in previous conversations, a pain to find and not nearly as plentiful as the blade fuses or glass fuses.
>> 
>> 
>> Thanks,
>> 
>> Zach - W8ZZW
>> 
>> Sent from my Android BlackBerry KEY2
>> 
>> 	Virus-free. www.avast.com
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