Cheap joule thief boards

[fritz42_male]

Just thought I would share this -got to be handy for those mini Picaxe projects

http://www.ebay.com/itm/5-x-Adjustable-Step-Up-Power-Supply-Charger-Module-1000mA-/120775186896?pt=AU_B_I_Electrical_Test_Equipment&hash=item1c1ec319d0

Lots of other good stuff as well. Bluetooth links, pir sensors etc

http://stores.ebay.com/sitedv88/Electrical-Test-Equipment-/_i.html?rt=nc&_fsub=2424333015&_sid=706749745&_trksid=p4634.c0.m14.l1581&_pgn=1

 

[gordonpurdy]

Don't know if anyone else has tried using these but I found they don't meet the specification given;

Input Voltage: 0.9-5V
Output Voltage: 5.0-5.2V

I found an input voltage of >1.35V is needed to get the 5V output even at no load, making them much less useful for 1 x AA cell applications than I thought. I haven't tested it but I'm also highly suspicious of the 1A output current claim.

Anyone else tried them?

 

[techElder]

This listing was ended by the seller because the item is no longer available. - eBay

Seems that they claimed 1% load regulation which doesn't jive with the rest of the specs.