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FS: Jibs Linear Drivers

rhd

rhd

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Re: FS: LM1117 Linear Driver - 1.3A Fixed

Crazy idea - couldn't you put like a 1 megaohm resistor across the diode (-) and (+), to always keep the capacitor discharged?
 





jib77

jib77

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Re: FS: LM1117 Linear Driver - 1.3A Fixed

Yes you could do that. You could also put like a 10K across the dummy load's LD+/-, this prevents leaving the cap charged. Just have to account for the additional current draw, but @ 10kOhm its going to be less than 1mA.
 
xivlia

xivlia

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Re: FS: LM1117 Linear Driver - 1.3A Fixed

aw man i didnt discharge my caps....maybe thats why its broken..when i first turned it on. the laser was dim..and then it got instensly bright and hit myself in the eye...luckyly it was way out of focus and all that happend was it made my left eyes see everything yellow lol.
 
xivlia

xivlia

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Re: FS: LM1117 Linear Driver - 1.3A Fixed

wait, i think i found out the problem. i just built a dummy load. and hooked it all up. and my driver doesnt even heat up...i think the driver may have been damaged. when i did my laser i didnt secure the connections with heatshrink. maybe i shortened it out and destroyed a component.
 
jib77

jib77

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Re: FS: LM1117 Linear Driver - 1.3A Fixed

xivlia said:
wait, i think i found out the problem. i just built a dummy load. and hooked it all up. and my driver doesnt even heat up...i think the driver may have been damaged. when i did my laser i didnt secure the connections with heatshrink. maybe i shortened it out and destroyed a component.
Click to expand...

The IC has internal protection for heat and over-current, so it should have been ok. If its not putting anything out it could be a bad IC. Send it back to me and Ill check it out. PM sent.
 
xivlia

xivlia

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Re: FS: LM1117 Linear Driver - 1.3A Fixed

ok il send it off first thing tomorrow.
 
jib77

jib77

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Re: FS: LM1117 Linear Driver - 1.3A Fixed

For those of you that wanted more than the limit, the initial wave has died down enough to lift the restriction. I have 28 LM1117(1.3A) and 16 LD1085(1.8A) left in stock.

I have 108 LM1117 and 72 LD1085 PCBs coming this week. :)
 
B

bhwollen

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Jan 13, 2011
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Re: FS: LM1117 Linear Driver - 1.3A Fixed

It doesn't even seem like you make any money off of these? you could sell them for so much more.
 
jib77

jib77

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Re: FS: LM1117 Linear Driver - 1.3A Fixed

I don't make much at all, not nearly enough to cover the time I spend building them. Laying down 100's of tiny solder paste blobs with a syringe is a pain in the you know where. Ill be converting an IR toaster oven into an Arduino controlled reflow oven using and my custom power relay and thermocouple digitizer circuit. Im also looking into getting a solder mask made. If I can get those done it will greatly improve my ability to pump these out without having to raise prices.
 
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bhwollen

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Re: FS: LM1117 Linear Driver - 1.3A Fixed

Well all I can say is thanks for giving back to the laser community for helping everyone who is on a tight budget. (like myself)
 
Tonga

Tonga

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Re: FS: LM1117 Linear Driver - 1.3A Fixed

Rick I received my drivers today, thank you man I appreciate it these are awesome:)!!
 
xivlia

xivlia

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Re: FS: LM1117 Linear Driver - 1.3A Fixed

ok, ive sent out the diver yesterday, you should receive them within a week or so. let me know if they are faulty or not :)
 
B

bhwollen

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Re: FS: LM1117 Linear Driver - 1.3A Fixed

Hey jib, I would like 3 more 1.8A drivers. Can you test them before shipment? Thanks!
 
Solder Blob

Solder Blob

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Re: FS: LM1117 Linear Driver - 1.3A Fixed

Jib, thanx for my 1.8's. They arrived quickly.
 
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