Replies to Minipulse Plus

[sinclairuser]

hi all i have been looking at the original schematic, and the goldscan schematic.
and i think i have worked out what the extra components around and including PL5 were for, if you compare the schematics, it looks to me like a connection for a meter, like the GS had, not all the PL5 connector obviously, but if you were adding one its in the right place, check it out.

[Dean Sarelius]

Hi Silverdog,
Not sure if you have already shipped my parts if you haven't then I would like to convert to the kit thanks but if you have already then no prob..!
Cheers,
Dean

[sinclairuser]

bought a kit today, to be honest i expected them to go really quickly, i have been checking andy's site every couple of hours for the last week, but stopped yesterday when i bought the board, then i came here earlier and saw he had added them to the site, so i went for a look, kits were in stock so i grabbed one, at least i will have a spare board now.
thanks andy.

[bernte_one]

me too, thx

regards

[Davor]

I just ordered it

[silverdog]

Ok, i have just added 6 kits to the shop

Please order just one each for now so as many people can try and provide feedback

I will be ordering more this week so there will be plenty more in a couple of weeks

[bernte_one]

hello andy,

when can we order a kit for MP+ ?

[Dean Sarelius]

Hi Mick,

Thank you for your advice I will try the LM4562 as you suggested...!

[geoscash1]

Thaishine on ebay has free shipping and excellent parts prices.. NE5532's are approx. 23 cents each.. 20 for $4.69

http://www.ebay.com/itm/20-x-NE5532-5532-Dual-Low-Noise-Op-Amp-IC-Texas-Brand-/220663060907?pt=LH_DefaultDomain_0&hash=item33608b19ab

[mickstv]

An LM4562 would be a better alternative, it has slightly lower noise than the OPA2134 or NE5532.

[Dean Sarelius]

Hi John,
Just weighing up my options..have you tried the OPA2134, would you say this is a better op amp than the 5532 or do you think I should try both.?

[johnandles]

here in Oz. The one part I could not purchase locally in DIP was the NE5532 so have purchased the MC33078 as a possible alternative..!

Dean, try OPA2134 available at Jaycar, here in OZ.
Cheers
John

[Dean Sarelius]

Awesome - thanks mate - cheers

[6666]

Dean you can get the 5532 from rs components with free postage if ordered on their website.

[Davor]

Hi George,
I have just purchased the PCB and some other parts from Silverdog the remaining parts from Element14 here in Oz. The one part I could not purchase locally in DIP was the NE5532 so have purchased the MC33078 as a possible alternative..!

I'm afraid this one will not do because it has PNP transistors front end which does not include a positive rail in its input voltage range.