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DIY Stompboxes => Building your own stompbox => Topic started by: jimbob on August 25, 2006, 02:43:17 PM

Title: Photocoupler Hamamatsu P873-13 question- neutron
Post by: jimbob on August 25, 2006, 02:43:17 PM
I bought this Photocoupler Hamamatsu P873-13 but Im wondering how its connected to the board.b

According to this
http://www.generalguitargadgets.com/diagrams/neutron_filter.pdf

Page 7

This part I have has 4 leads at one end and 2 on the other. I dont see this in the pic.

ANyone?
Title: Re: Photocoupler Hamamatsu P873-13 question- neutron
Post by: lowstar on August 25, 2006, 04:12:41 PM
it should be the one mentioned in option 2:
has 2 leads on one side (goes into pcb) and 4 on the other.

cheers,
lowstar
Title: Re: Photocoupler Hamamatsu P873-13 question- neutron
Post by: mdh on August 25, 2006, 04:16:59 PM
Quote from: jimbob on August 25, 2006, 02:43:17 PM
Page 7

This part I have has 4 leads at one end and 2 on the other. I dont see this in the pic.

Look at the pic labeled "Option 2." The end with four leads (the resistor leads) is shown pointing up, and the two thicker leads are on the end that's pointing down. If you compare to the picture of a single LED/LDR package immediately below, and to the "Option 3" board layout pic, you should be able to figure it out. The trouble is that you can't see the LED leads through the package as it's drawn. Make sure you get the LED polarity right, and don't forget the jumper that's pictured to the left.

Good luck! The Neutron can be a bit of a hassle to build, but it's definitely worth it!