On Mon, Feb 14, 2011 at 1:57 PM, Tony Firshman <[email protected]> wrote:
> Plastic wrote, on 14/Feb/11 19:54 | Feb14: > > On Mon, Feb 14, 2011 at 1:41 PM, Tony Firshman<[email protected]> >> wrote: >> >> Plastic wrote, on 14/Feb/11 19:38 | Feb14: >>> >>> Hi all, >>> >>>> >>>> I have a Gold Card which has the discontinued 40LF220 lithium battery. >>>> The >>>> equivalent MGL0025 is also discontinued, and even with the long shelf >>>> life >>>> of these lithium batteries, the new old stock ones are now useless. When >>>> you >>>> can find them, they were manufactured in 2002 and cost $30+ - one place >>>> quoted me $140 for a minimum order of 5, plus shipping. >>>> >>>> Is there a ready-made adaptor PCB available that will allow me to use a >>>> CR2032? >>>> >>>> Does the Super Gold Card use the same battery? >>>> >>>> If not, I would be happy to design and manufacture a limited run of >>>> these >>>> adaptors to use CR2032s so we can all have our battery backed clocks >>>> working >>>> again. I cannot make a guess on price as I have not looked at the cost >>>> of >>>> short-run PCBs recently. >>>> >>>> I would be happy to send batches of these to traders in each country at >>>> cost >>>> price. >>>> >>>> What is the need/demand for something like this? >>>> >>>> I am sure that would be popular. I keep getting asked about these >>>> >>> batteries. All my GC/SGC batteries are dead, but (of course) my systems >>> use >>> the Minerva clock. >>> >>> Is the CR2032 man enough though? >>> >> >> >> The CR2032 is 3V 235ma, and on this card would need to be replaced every >> three years or so, which would be a simple "pop a new one in" operation... >> The 40LF220 had a lower current capacity but was designed for a long >> shelf >> life of ten years, hence the bulk. So yes, the CR2032 truly fits this >> application. >> >> The format is standard for battery backed clocks on PCs, but was quite new >> in the late 80s. >> >> I will look at current costs for getting a batch of 100 of these tiny, >> single layer PCBs made. >> >> Couldn't the card have a battery socket so that only the battery need be > replaced? > > ( ... and why are you not yet living Texas time - it is 2am (8-)# ) That is exactly what I was describing ;) A simple adaptor card to a CR2032 socket, and a CR2032 battery. Dave _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
