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Dear Lazeerer, that 'evil shadow ', frightening yet beautiful .Great work. Wish I had all the equipments to work on one of the 'evil ' tony1

rhd, you have a good point there, I think it needs further discussion and verified .

Dear Zeker, , I think Lm317 is easier to work with, and much cheaper if I am not wrong.

Dear friends , Anyone can please tell me the power of a laser pointer that can light a match stick 6 meters away. I am really interested in building or buying one that can do it. Thank you Tony.

Hello There Epiclaser, Jayrob is right, You won't go wrong with Jayrob. Tony1

Mohrenburg, you are 100% correct.

Snowluck, One look at it tell me the work is done in a hurry. Very poor workman ship, unskilled work. Watch some videos in u tube. You can use a suitable iron to do the work. It will be messy to unsolder and try again. Start a new , one component at a time. Use a bare minimum Paste and...

Osmosis. The reason behind tin can and propane is you have no way of knowing and controlling the temperature.

My advice is keep the cost down Osmosis. Ben Is right . Don't ever try tin can and propane. If your skillet is well trusted, use it don't spend 1 K for the plastic welder. You have to watch out for the cooling curve that has been discussed. Mass production , well leave it to the professionals...

Hi, Osmosis, Thank you for all the advice and tips.Is the Skillet the same size as a ordinary Oven?. For Photo works , a camera with good Zoom lens or additional close up lens can help you there. Close up lens are just one thin peace which you screw on to your main lens like a filter lens and...

dear osmosis, good to hear you have polished your skills in smd soldering .post some tips and photos.

good luck to you

I am not sure but from my experience a 27 ma spike should be safe. To be on the safer side it is better to filter the 27ma spike off with a calculated capacitor .

You can use a multimeter to measure the current. But if you use an ammeter to measure the current , you have a multimeter handy to measure other thing around the circuit. Get the table at REUK.CO.UK. LM Current Calcultor

You can buy a dummy test load.. These dummy test loads comes in various input Current. If you use a low one it may blow. Use a higher capacity. Don't use a multimeter. Buy an ammeter, connect it in series to the load. If you know the total value of the resistor and the voltage supply , you...

Blord is right a DVD red laser diode can't handle 500ma. You will fry it. I know cause I have fried one laser diode that way. Start with 300ma. Then try to tweak it slowly. If it turn bright suddenly turn it down immediately to save the Diode.

Thanks Gillza, for the information. tony1

Kizdawg, I haven't come across "Conductive Thermal Epoxy." I have used solder phaste, is that Ok? Tony1

Using glue to keep you SMDs in position. Am I right, the glue is not in contact between the component and the conducting area . I had modem where a smd resistor was blown off from its location during a thunderstorm. I found it and it tested good I couldn't solder it back. After many attempts...

Dear Tom Steele, It is really difficult to obtain SMD parts. Yes Malaysia manufacture a lot of chips but not SMD components. I have an account with Element 14 for a number of years. You cannot buy small items , just a piece, you have to buy minimum 10 pieces when you only need 1. This...