Miscellaneous Technical Information
(Which You Probably Don't Need)

Version 1.03

Copyright © 1994-2013
Samuel M. Goldwasser
--- All Rights Reserved ---

For contact info, please see the
Sci.Electronics.Repair FAQ Email Links Page.


Reproduction of this document in whole or in part is permitted if both of the following conditions are satisfied:
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Table of Contents



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    Preface

    Author and Copyright

    Author: Samuel M. Goldwasser

    For contact info, please see the Sci.Electronics.Repair FAQ Email Links Page.

    Copyright © 1994-2013
    All Rights Reserved

    Reproduction of this document in whole or in part is permitted if both of the following conditions are satisfied:

    1.This notice is included in its entirety at the beginning.
    2.There is no charge except to cover the costs of copying.

    DISCLAIMER

    We will not be responsible for any damage to flesh, material, or ego that may result from the use of this information!



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    Introduction

    Scope and Purpose of This Document

    This is a random collection of pinouts and other stuff for various items I've found or bought for next to nothing with no hookup instructions but which doesn't really have a place in any other FAQs. :)

    I can pretty much guarantee that there is nothing here that you're likely to just happen to be interested in. But a search engine should find it if needed. :)



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    Non-Linear Systems, Inc. PM-349 3-1/2 Digit DPM

    Pin  1:  300 ohms to Gnd (for DPs)   Pin A:  NC
    Pin  2:  NC                          Pin B:  DP3 - Connect to Pin 1 (188.8)
    Pin  3:  NC                          Pin C:  DP2 - Connect to Pin 1 (18.88)
    Pin  4:  NC                          Pin D:  DP1 - Connect to Pin 1 (1.888) *
    Pin  5:  In-                         Pin E:  NC
    Pin  6:  NC                          Pin F:  NC
    Pin  7:  NC                          Pin H:  In+
    Pin  8:  LED Digit Power             Pin J:  NC
    Pin  9:  Vdd (+5)                    Pin K:  Gnd
    Pin 10:  LED Sign (+/-) Power        Pin L:  Gnd
    

    Range: Set to +/-1.999 VDC, DP1 selected by being connected to pin 1.

    IC info; ICL7107R, datasheet at: Intersil ICL7107 Datasheet.



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    Varian Spectral Lamp X49-609

    This is a small sealed glass globe (about 10 mm diameter) in an aluminum reflector excited by a self-contained vacuum tube oscillator. I have no idea what gas is inside the globe. The discharge color is similar to that of low pressure air, or maybe just nitrogen, but there is no way this globe could have leaked. There appears to be nothing else inside the globe that might vaporize once it heats up, and no visible change takes place in the discharge color or intensity after running for awhile.

    U.S. Patent #2,975,330: Electrodeless Discharge Method and Apparatus shows the basic idea though the actual implementation is differs considerably.

    Filament: 5 V results in a nice orange glow and it works, but I don't know if it's really rated for 6.3 V.

    B+: 150 to 300 VDC to the case. There is some voltage threshold above which the glow inside the globe gets noticeably more intense, though it's never what one might call bright.

    If anyone knows more about these devices, please contact me via the Sci.Electronics.Repair FAQ Email Links Page.



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    Spellman LCM13X1408 High Voltage Power Supply

    This is a 3-1/4" x 4-1/8" x 1-3/8" semi-potted multiple output power supply. It has two high voltage (Alden-style) single pin connectors and a 4 pin DC input and medium voltage output connector (same as femail PC disk drive connector). A recessed trimpot allows for adjustment of the output voltages. Only one is actually regulated (I assume it is Output #1 but don't know for sure) but the others will roughly track it.

    I have determined operation by tracing the wiring of the 4 pin connector and then measuring the output voltages. For the measurements, Output #1 was set for 12 kV.

       Pin    Function     Value
     ------------------------------
       Red    Output 1    +12 kVDC
      White   Output 2     +6 kVDC
    
        1     Output 3   +625 VDC     
        2     DC In       +24 VDC
        3     Output 4   -125 VDC
        4     Common
    

    The output current capability is knnown but not it's certainly not very high.



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    -- end V1.03 --