Modify - summary of conversion process for a LED string

This is a summary of how to convert the supply voltages on a LED string without an original controller. The supply voltage can be either AC or DC. The conversion can fit a controller of your chosing.

If you have any questions, please ask by email.

Step 1 - design selection and calculations

The 2 examples showed how to do the conversion and the design selection and calculations. If this is too complex, send ALL the info on the lights (listed below) to me by email. I have a spreadsheet program which will give all the answers and division data.

Step 2 - dividing light string into series/ parallel config.

The 2 examples showed how to do the division. The key point is to draw the whole light string including polarity and connections..... you can lump the chosen number of series LEDs into 1 LED group as I did in Example 2.

Then mark the drawing with "C X A" labels and transfer onto wires. Check it's correct by looking at LED construction as shown above and in Examples.

Step 3 - cutting and soldering

This is simply carrying out the outcome from Step 2.... then having the enjoyment of seeing your new creation!

Info required

Original supply voltage:          V           AC or DC
Is a separate bridge rectifier fitted: yes/ no
Is a separate controller fitted:         no (only good answer)
Total No. LEDs:

Select either a)  b)   c)  :

a) All LEDs are either one of or a combination of red/ orange/ yellow light colours;
b) All LEDs are either one of or a combination of blue/ white/ pink/ purple/ green;
c) LEDs are a mixture of a) and b) such as in Example 2.

For case c), what is the order of the LED colours in the recurring pattern, eg RYGBWRYGBW:

...................................

Give the numbers of the LEDs which have 3 wires connected to it and polarity?

eg 1st LED:      +      or      -- ;  last LED:           +   or    --  ;

each intermediate LED: No. ......      polarity   + or  --

New design

Required LED supply voltage:         ...... DC       ..... AC ( < 40V)

Transformer or switching power supply or battery

Controller's voltage and current rating  ..... V   ..... A per channel      No. channels:
(if wanted)
Note controller must be suitable for common anode configuration.

END