Dido

Why don`t you replace it with another one model part the bridge is not a critical part like an IC, transistor,diode or else

No I mean electrolysis Here it is how it works You get an old car battery you take the electrolyte then you mix 1 liter of the electrolyte with 300ml of distiled water (30%).Then you put the liquid in a tub you put the plus electrode to the copper which has to be eaten away and you use for a minus electrode a piece of I`m not really sure which is the best metal I`ve tried with lead but I think that the electrode should be made of Zinc I haven`t got zinc very much so I used Lead.After that you should have a really Powerful power supply because at 24Volts I measured 23.7 Amps and the power transistors of my Bench Top PSU got really hot I think I could have frien an egg on the radiator but after 3 minutes the copper was almost gone. Then you put the board in regular acid or FeCl3 for final eating away and that`s it.There other ways for making a board.For me I etch my boards with FeCl3 or Nitrogen Acid. I prefer the ordinary way.

Haha I`ve been using this method for making PCB`s for year and more.There are a little secrets for making these PCB`s. First for me I`ve tried so many types of paper but I think that the best one is Ink Tec`s Premium photo paper. The most important process is the ironing most of people say that the PCB should be ironed for 2 or 3 minutes at full temp. That`s not true because in most ot the photo papers there is around 40% of Polypropylen and Polyethilen when you fry the paper with such temperatures the plastic in the paper stick on the PCB and happens nothing the best temp for is 140 degrees. Putting the board in water is a mistake because you will remove the paper harder than if you try removing it gentle when it`s dry. If there are broken tracks you can fix them by redrawing them with a permanent ink or straight a permanent marker I use Schneider S303. After that you can put it in the FeCl3 and etch it. I know other methods for really fast etching for about 1.5~3 minute etching using electrolysis but I`m going to write a topic about that method Has someone ever experienced with that method? ??? Hope I`ve helped you ::)

Ante Do you use a circuit simulation software and if you use what is it. 10X for this great link

OOOps I wrote the wrong site Sorry here is the link http://www.muenster.de/~welp/sb.htm#rtty Again I`m really sorry everyone make mistakes :(

Coooool site try this one http://w1.859.telia.com/~u85920178/ - The No 1 site for Ham Amateur Radio Software

Try these ;D http://www.commlinx.com.au/schematics.htm http://www.interq.or.jp/japan/se-inoue/e_menu.htm http://www.discovercircuits.com/ http://www.electronic-circuits-diagrams.com/index.shtml http://www.uoguelph.ca/~antoon/ http://www.mitedu.freeserve.co.uk/Circuits/ http://w1.859.telia.com/~u85920178/

Try building a robotized hand It`s easyer than u think U need just stepper motors and drivers for them.

Actually my first project was a Time Delay Relay Why don`t you try this? The first delay relay I made had only four transistors after that I tryed the 555 timer monostable,astable mode after that CMOS circuits, TTL and so on and so on.Just you`ve got to be patient.Don`t worry if you burn a chip or diode I`ve done this thousands of times.

10x man Where did you find that datasheet I`ve been looking in the net for four days

Hi Where can I find a datasheet or where can I buy an LCD display marked UMSH - 7061JN-YG maybe it has to be manufactured by Senao.

Hi I need a datasheet for D17072 chip from NEC Semiconductors It`s got to be some kind of a FM tuner IC

10x A lot :) :) :) :)

Thanks I`ll try another one circuit with different structure

try searching in google www.google.com

Well tell me something else Give me some links?

Hi Can anyone suggest me a circuit for a 2 or 3 channel infra red remote control.I wanna make my AF Power Amp controlled with a remote. I have got a circuit here IC1 is a Op Amp - LM308 IC2 is some kind of tone decoder - LM567

Yeah I mean with the word "hooter" a soldering tip what`s the smallest tip you`ve got.

Posted by: sasi Posted on: Today at 03:14:48am Your question was "How do I solder SMD components with a regular iron" Are you using a 6V iron regularly ? Dear sasi I think that a regular iron means an iron with a regular "hooter" thick 4,5 mm that`s what I mean with this.

These IC`s are very sensitive so you shouldn`t solder them with a 230V iron.I use a 6V one but if you don`t like to spend so much money you can try this way 1. You wait for the iron to get hotter 2. You turn it off and start soldering when the iron gets cold you turn it on again and like that.......

Well I think that this is a little amazing and maybe all this stuff seems for me to be untrue because the motor can not recharge the source of power by itself there is always loss of power.Tell me a little more about it I saw the links that you gave me but I had a little work to do so I haven`t read them carefuly. ::)

Is that a kind of a stepper motor or what I have made a few projects with stepper motor.Tell me more about that thing what do you want to do with this motor?

Ok The iron I`m using is a 25Watt one but I remove the "hooter" of the iron and I put a 1.5mm thick copper wire without the isolation sharpen in the end.That`s how I usually solder these components. I have experienced with electronics very much but I haven`t had such a problem until now.

Hello, I really need help I broke my Sony Walkman and I found out that the left channel is not working because of one 8 ohm small SMD resistor so I`m thinking of soldering a new one but the problem is that these resistors are even smaller than the regular SMD types. Pls for help If someone has got experience with SMD components.