Boost driver ideas...

I love recycling the buttons on those CD/DVD drives.

What size did you set the caps and resitors for on the pcb with opamp?

My new updated circuit quite similar to woops

printout already flipped not sure for size though

print came out perfect at 17%. I am the only one adding to the thread

cool. tell us how it goes. have you got all the parts for it?

I have sorta decided that selling TPS circuits with the high side amp is pointless. for a few reasons;
the lavadrive already exists.
the TPS has a max switch current of 1.5A, this means that it will struggle to power a DVD burner diode from a single AA. it will work from 2 AA's but the lavadrive does this anyway.
the only real thing the TPS will be able to do over the lavadrive is power blueray/hddvd diodes from a single AA. and most people would use it for hd-dvd, which doesn't require a high side amp because the diode isn't electrically connected to the case.

So. should i still bother making them to sell? keeping in mind that the only thing they have over the lavadrive is powering hd-dvd diodes from a AA.
also the efficiency with 1.5V input driving a dhdvd is around 80%. (not tested) still this is better than anything else out there that can drive a laser from a AA.
and at 3V input (like with 2AA's or a lithium cell) driving a dvd burner it is 90% efficient (not tested), but so is the lavadrive

so who is interested in running a hddvd diode off a single AA?

even a burner at 200ma in a small form would be great. Its up to you, wheather you want to. I just learning and helping unless someone wants one made, i wouldnt sell them.

so without the high side amp, the only differences would be:

No current through the host
No input voltage higher than the voltage across the diode

correct?

GooeyGus said:

so without the high side amp, the only differences would be:

No current through the host
No input voltage higher than the voltage across the diode

correct?

Click to expand...

the input voltage can be between 0.3 and 5.5V, higher or lower than the output. thats a feature of the TPS chip and it doesn't require a high side amp for current measuring.
of course you would need to be careful with input and output currents and beware that at a lower input voltage, higher input currents are required to supply the same amount of power

the only difference (without the high side amp) is that the cathode of the laser can't be connected to ground. so for burners this means you can't let the diode contact a metal grounded case like in a flashlight. but for hddvd lasers it doesn't matter because the diode is insulated from the case

Has anyone made woops circuit with the opamp? Any one know were Caps go?

Hello, We are supply the XBOX 360 HD-DVD laser PHR-803T sleds and other Game accessories and laser lens. your need any product, please contact us. thank you!
Web: www.laser-jp.com

jinpenglaser said:

Hello, We are supply the XBOX 360 HD-DVD laser PHR-803T sleds and other Game accessories and laser lens. your need any product, please contact us. thank you!
Web: www.laser-jp.com

Click to expand...

Why the hell are you spamming the Forum????

toked323 said:

Why the hell are you spamming the Forum????

Click to expand...

Why are you trying to speak to a spammer (who probably only speaks Japanese)?

Peace,
dave

toked323 said:

Has anyone made woops circuit with the opamp? Any one know were Caps go?

Click to expand...

i will update the first image too

I'm going to make my first one with the schematic I showed you woop soon. I'm so excited. I hope I am able to solder things that small... with no solder mask...

airy52 said:

I'm going to make my first one with the schematic I showed you woop soon. I'm so excited. I hope I am able to solder things that small... with no solder mask...

Click to expand...

Airy a tip: Go to dealextreme.com and buy lodestar solder paste its $3.73? the cheapest around. then take a needly or something small and wipe some solder paste(not to much) on the pads were the components go. You dont have to get each pin with some solder paste on just make a line across. then place components on and either put it in your toaster oven or use a paint stripper gun for reflow.