OMK

Resistors ore not polarity conscious and so can be connected any way round. Diodes are, and the end of the diode marked with a bar or band should go towards the positive supply line.

Negatory! It's the other way around.The bar, or band that PeterM mentions, denotes the Cathode end of the diode. The opposite end is the Anode. it is the Anode that should be connected to positive.

Referring to the attachment, figures #1 and #2 show what happens when the diode is forward-biased and reversed-biased.Figure #3 is the schematic equivalent of figure #1.Figure #4 pictorial indicates which end of the diode is Anode and which is Cathode. Figure #4 schematic give a good indication of which way conventional current flows. It's illustrated by the diode 'arrow' pointing towards the Cathode. In other words, conventional current flows from the positive rail, through the diode and the lamp, then back through negative.

There are times when the diode needs to be reversed-biased. For instance, where a relay is used (Fig.5). In this instance, it's the Cathode that is connected to positive.I shan't bog you down with technical howdy-doody, but suffice to say that if you stick by these rules, everything should work good.

Thank you all for your contributions.Ihaven't carried out any work on soldering the Diodes & Resistors yet :so no damage PETERM. Can anyone tell me what is the best way of carrying out the work of soldering the Ds. & Rst. so that all the wires are kept in a neat and orderly fashion.As you will gather from all my queries that i am a novice.

FullLeatherJacket

dear mfv1132I've just read your original question - you know, the one about connecting resistors and diodes etc. For what it's worth I can tell you that PMK's answer about which way around diodes go is correct because it actually works on the bench. In reply to your second question about making it neat all I can add - if it's of any use - is to plan to solder your wires and diodes and resistors to a piece of Veroboard, which is copper-backed sheet with conducting strips with holes in them. It gives much better support than just joining things end-to-end in the middle of a wiring run. PMK's circuits are built on this stuff. Check out his website. You can stick the finished mini-circuit board to the inside of your boat with double-sided sticky foam pads.Sorry if this answer is long. Couldn't get it any smaller without missing things out.Suit yourself.

Talking of diodes and resistors, I have just completed making a regulator for use with your receivers which will work with any receiver making it a BEC, converts your motor power to 6 volts to save the extra battery pack, it is only 25 mm or 1 inch square and weighs only 10 grammes so it will not take up much room...

OMK

Well, I envy you.At least you got to spend a bit of liesurely sight-seeing time.My boss sends me there regularly. Ten cigarette-less hrs on the plane, followed by another couple hrs waiting around at the terminal... it's a killer!You step through the airport doors to a world of Californian sunshine, then before you know it , tomorrow is yesterday, and I'm on the next flight back to Blighty.Dirty Heathrow... rain... cold...

There is indeed, me ol' cobber.If memory serves, I think the first project I built from there was his glowplug driver.Lots of neat stuff on his other pages, too.Damned if I can see his BEC circuit, though. Would I be right in thinking that you used a standard +5v regulator?Wanna tip?... Swap out the bog-standard regulator for one of the newer low drop-out types. These work down to around 6-volts or less, whereas a standard reg' will sap as much as around 3-volts from your precious battery juice.

Poor ol' mvf1132... he posted a request for diodes and resistors, and we're talking about everything but!

Well, I envy you.At least you got to spend a bit of liesurely sight-seeing time.My boss sends me there regularly. Ten cigarette-less hrs on the plane, followed by another couple hrs waiting around at the terminal... it's a killer!You step through the airport doors to a world of Californian sunshine, then before you know it , tomorrow is yesterday, and I'm on the next flight back to Blighty.Dirty Heathrow... rain... cold...

Glad you enjoyed yourself.

Hmm... an incoming from CBR900 as I type.

Standby........

PMK

Used to do a job like that many years ago (1970s), sometimes never left the airfield. Great way to see the concrete strips of the world (and sometimes in the dark). OK when you're young, wouldn't want to do it now.