Mic Kaczmarczik's What Are Optoisolators Information

What Are Optoisolators


Questions and Answers

What Are Optoisolators

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Questions and Answers

What Are Optoisolators

What Are Optoisolators

From aya--(at)--arthlink.net Thu Jul 1 09:49:29 CDT 1999
From: "Gil Ayan"
Newsgroups: alt.guitar.amps,rec.audio.tubes
Subject: Re: LDR's - what are they and where do I buy them?
Date: Wed, 30 Jun 1999 10:32:29 -0700
X-Posted-By:--(at)--38.13.114.187 (urula)
X-Mimeole: Produced By Microsoft MimeOLE V4.72.3155.0
Xref: geraldo.cc.utexas.edu alt.guitar.amps:187172 rec.audio.tubes:127063


Jeff Stapleton wrote in message <7ldhmj$fd1$--(at)--fx2nh3.news.uu.net>...
>Mesa/Boogie uses LDR's (apparently some sort of light triggered switch) in
>many of their circuit designs. What do these thingy's do and where might I
>find them?

Go here:

http://www.egginc.com/Opto-110/vactrols.htm

and read all about the Vactec optoisolaters (used by Fender, Boogie,
Soldano, etc.).

What do they do? They are a photocell which gets triggered by an LED, in
essence achieving silent switching (hence the name, LDR - light dependent
resistor). They cost around $5-6 a piece, and can be ordered from Newark
Electronics, Magic Parts, etc.

Boogie uses both the VTL5C1 and VTL5C4 types, Soldano uses the VTL5C1
exclusively, etc.

Here's a minute-sized picture of the bugger.

Good luck,

Gil




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end






 

Index:

Amp Shipping
Dealer Cost Vs List Price
Death Switch
Diodes on Plates
Dont Use Stereo Speakers
Effects FAQ
Effects FAQ
Effects FAQ
Fix Reverb Ground Hum
Flea Market Checkout
Hammond Organ Buys
Hammond Tonewheel Organs
How Long Do Tubes Last
How Many Watts
Magnetics for Morons
Microphone Placement
NOS defined
Stage Placement
What Are Optoisolators
What are orange drops
What Dealers Pay
What is 6V6GTA
What is a Fetron
What is a Klystron
What is a Plexi
What is Bias
What is Blue Glow
What is Ground Lift
What is Kinkless Tetrode
What is Single Ended
What Is Tube Glow
What JBL Means
Which 4x12 Impedance
Who Made Delco Tubes
Who Makes Kendrick Spkrs
Why 16ohm Loads
Why AC on heaters
Why Blackface an Amp
Why Bleeder Resistors
Why Cap Value Spread
Why Care About Phase
Why Change SF Lead Dress
Why Microphonic Cords
Why Not Bias By Scope
Why Opto Trem
Why rectifier is separate
Why Select Highest Z Tap
Why Sprague Caps
Why Use Grid Stoppers
Why Use Standby

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