buzzz57
Marantz noob
DIY : Marantz LED kit for a bargain
Hi,
I'm quite new here. Last month, I have spent some nights looking for a LED kit that wouldn't be too expensive.
When I have seen the prices, I have decided to build my own kit.
First of all, I would like to tell you that I have neither particular electronic nor soldering skills.
I have just taken advantage of others' knowledge on the forum, and put it together.
Below is how I have done.
First step : defining the constrains
1) use the 8V AC power supply.
2) have no flickering due to AC.
3) keep the fuse lamp format to have no future impact
4) have the least components
5) keep the price low
For point 1, I have used the following topic :
http://mail.audiokarma.org/forums/showthread.php?t=119597
I have decided to stick to the circuit B : 1 LED, 1 resistor, 1 diode
The problem with this solution is the 50/60Hz flickering.
The solution to point 2 is the following.
Instead of using a single LED, I have doubled the components.
Which gives me the following schematic :
With that, you now have a 100/120Hz flickering, that is not noticeable by the human eye.
Now, points 3, 4 and 5 must be taken in account.
To achieve point 3, there is only 1 solution : using CMS LEDS. Standard LEDs can't go in the 6x30mm fuse lamp cartridge, or you have to leave the LEDs outside and it doesn't look very nice and professional.
I decided to go the CMS route.
For point 4, I have found a solution while browsing to find my CMS LEDs. I have come across a vishay CMS LED reference on Radiospares (a french Mousers.com equivalent). This LED is the VLMW41.you can find it on Mousers too under the reference 78-VLMW41R1T1.
Here is the technical sheet : http://docs-europe.origin.electrocomponents.com/webdocs/0e54/0900766b80e54154.pdf
With 2 LEDs put head to head, the schematic is now as follows :
This is equivalent to the previous schematic, but you now have only 3 components instead of 5.
Point 5 now.
Here is your buyers' list for a 2238B receiver (7 lamps) :
- 7 x 270ohms 1/4W resistors
- 14 x VLMW41 LEDs
- 7 x 26.99x6.34mm fuses
Next post : How to.
Hi,
I'm quite new here. Last month, I have spent some nights looking for a LED kit that wouldn't be too expensive.
When I have seen the prices, I have decided to build my own kit.
First of all, I would like to tell you that I have neither particular electronic nor soldering skills.
I have just taken advantage of others' knowledge on the forum, and put it together.
Below is how I have done.
First step : defining the constrains
1) use the 8V AC power supply.
2) have no flickering due to AC.
3) keep the fuse lamp format to have no future impact
4) have the least components
5) keep the price low
For point 1, I have used the following topic :
http://mail.audiokarma.org/forums/showthread.php?t=119597
I have decided to stick to the circuit B : 1 LED, 1 resistor, 1 diode
The problem with this solution is the 50/60Hz flickering.
The solution to point 2 is the following.
Instead of using a single LED, I have doubled the components.
Which gives me the following schematic :
With that, you now have a 100/120Hz flickering, that is not noticeable by the human eye.
Now, points 3, 4 and 5 must be taken in account.
To achieve point 3, there is only 1 solution : using CMS LEDS. Standard LEDs can't go in the 6x30mm fuse lamp cartridge, or you have to leave the LEDs outside and it doesn't look very nice and professional.
I decided to go the CMS route.
For point 4, I have found a solution while browsing to find my CMS LEDs. I have come across a vishay CMS LED reference on Radiospares (a french Mousers.com equivalent). This LED is the VLMW41.you can find it on Mousers too under the reference 78-VLMW41R1T1.
Here is the technical sheet : http://docs-europe.origin.electrocomponents.com/webdocs/0e54/0900766b80e54154.pdf
With 2 LEDs put head to head, the schematic is now as follows :
This is equivalent to the previous schematic, but you now have only 3 components instead of 5.
Point 5 now.
Here is your buyers' list for a 2238B receiver (7 lamps) :
- 7 x 270ohms 1/4W resistors
- 14 x VLMW41 LEDs
- 7 x 26.99x6.34mm fuses
Next post : How to.
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