Recent content by John Readman

Hi Sakha, This is a very good idea. I had been thinking about pulling apart a remote dimmer switch for interior lighting. Your way sounds more fun.

Hi all, I would like to make a simple remote control on / off switch. It is for a string of LV leds. 12 V and 0.24 amp running from a battery supply. I would simply like remote switch instead of a toggle so no one else can fiddle with it. Can anyone help me, I have been scouring the...

Hi all, These are a new idea I am working on and not just normal fair lights. I have a set made and wired in series, they work fine. However, prior to leaving them running I would like to find out the way in which the number of watts and amps are totalled up. Could someone give me any advice? Johnny

Hi all, This will be very basic I am sure. I am wiring 10 number light bulbs together in series to be used as a Christmas decoration. They are 24V and 3W. What are the minimum wire properties I should be using 240V and ?? watt? I am also interested in internal shunts, so that if one bulb...

Hi, I am trying to wire some leds up. There are 5 of them in series VF typ 3.2 V and 30mA. I am using a 9V square battery. 60 Ohm of resistance and an on off switch. Yet it does not light up. Is this because I do not have enough voltage?? P.S. Yes the switch is on! Thanks, Johnny

Thanks for your post. Let me offer an example I am linking 10 No LEDs in series (I think, they are one after the other) Reverse Current VR = 5V Power dissipation 120 mW DC Forward Current 30 mA Peak Forward Current [1] 100 mA Reverse Voltage 5 V Which of these pieces of info would I...

Hi, I am trying to link up a series of LEDs and having a bit of trouble calculating the power supply needed. I am actually doing this for a number of applications and wondered if anyone had a system for working this out?? Thanks, John