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  • Users: Stanfi
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  1. Stanfi

    Selecting and Sizing Single Phase Motor Start Capacitor

    I am wanting to implenent a start capacitor into an existing 120V 1hp motor. Can someone provide me with the proper forumlas, or reference material for selecting and sizing the correct start capacitor? Thanks,
  2. Stanfi

    Transistor Selection, Replacing PN2222A

    I have a design that is currently using a PN2222A Transistor, it is on the output side of a LM723 Voltage regulator, to increase the current capability of my voltage regulator. The circuit is designed to output 12VDC, the collector is connected to a 24VDC source. The problem that I am having...
  3. Stanfi

    Reliance Automate 30

    Does anyone know if parts for a Reliance Automate 30 PLC system can still be purchased, or was this series faded out by Allen Bradley? Thanks,
  4. Stanfi

    Looking For PCB Power Supply Vendor

    I am looking for a PCB mount Power Supply. Input Voltage: 120-240VAC Output Voltage: 24VDC Power: 10W Fully Enclosed Package. Does anyone have a vendor or manufacture they would like to recoemend. My current manufacuter is no longer building the power supply I use, therefore I am in search of...
  5. Stanfi

    SAE dash size reference

    Does anyone know where there is a chart or some form of reference for SAE dash size as to what they represent. I have a port that is 1 5/16-12 SAE, and I have another that is 1 1/16-12 SAE, that I would like to know the dash equivalent of them are. TIA.
  6. Stanfi

    Need Help. Delta Flow Divider 50/50

    I am really new to fluid power. I have a delta 50/50 flow divider (HPR23). It has 2 inlet ports. One on each end. I was expecting only 1 inlet and 2 outlets. Do I need to Tee the inlets togehter, or can I just hook up one of them. TIA.
  7. Stanfi

    Belden Calbe in Cable Tray

    I have an application where I need to install some Belden or equivalent mulit conductor cable in a cable tray. One of the cables I want to use is an 8760. This tray will be located outside. Is it acceptable to use these cables in a tray? TIA.
  8. Stanfi

    Square D Ammeter

    I came across a Squared D Ammeter. It is about 30 years old. It is a Square D, part number 63090 214 07 001. I am having trouble finding out anything about the device, since it is so old. Anyone familar with one? I am wanting to know what the input signal is? I am guess 0-5A. Thanks.
  9. Stanfi

    Audio Cable Passing through Hazardous Area

    I have an audio cable for a intercome system that will pass from and non-hazardous area to another non-hazardous area, but in route will pass through a hazardous area. My question is if this cable needs pass through intrinsic barriers? If so, will it degrade the signal quality? Thanks
  10. Stanfi

    Industrial Intercom Systems

    Does anyone have any experience with Inudstrial Intercoms, brands such as Federal Signal and GAI-tronics. I am wanting to know if different manufacutures are compatible with another?
  11. Stanfi

    Contact/ ma/ Wireless Application

    I have an application. I have a device that has an 4 to 20ma output, and a contact closure. I would like to be able to transmit these two signals to two different recievers. The receiver would be able to output the contact closure as well as the 4 to 20 ma signals. One receiver would be...
  12. Stanfi

    Extending 4 to 20 ma Signal

    I have a device that has a 4 to 20ma output. I need to have two remote meters that will receive this signal, One is 1/2 mile away, the other is 1 mile away. Does anyone have any suggestions on how this can be done? Thanks.
  13. Stanfi

    RS-232 Data Line Surge Protection

    What type of surge suppressors have you had succes with on RS232 Data Lines? I am in the search for a quality device, perferably one that will plug "in line" between two DBs. Thanks.
  14. Stanfi

    Siemens PCS7 Modubus OPC Server

    We are looking at a systems where we will be communication to a Siemens PCS7 over modbus. Being new to the Siemens DCS, my question is if there is and OPC server that I can use with a Visual Basic application to comunicate to the DCS? We generally use Allen Bradely PLC equipment, and use...
  15. Stanfi

    Two Hydraulic Motors, controled by one Hydraulic Pump.

    I am posting this for someone else. Here is the application: I have a fixed 23 GMP pump, 3000 PSI I am running 2 hydraulic motors, both reversible. I need one supplied at 15 GPM I need to adjust the flow to the second motor for speed control. I think I need a diverter valve to split...
  16. Stanfi

    Calculating Torque on a Pulley

    It's been a while since I worked any statics or physics problems. I have a 3000lb weith that is going to be suspended by a pulley that is 6" in diameter. How do I calculate the toruqe in inch-lbs on that pulley? Thanks
  17. Stanfi

    FE/ PE

    I have a BS in EE. I have been out of school almost 10 years. Unfortantley time flies as we get older. The job I have worked at has not required me to have a PE. However, I would like to have it, just for my own personal achievement. Plus it would open the door for oppourtunties in the future...
  18. Stanfi

    Offsetting Input Of a Instrumentation Amplifer

    I have an application where I have a 0-36mv dc signal going into an instrumentation amplifer, and I set the gain to give me around 0 to 10VDC out. In my application the lowest the my mv singal may go is 20mv, so my scalable signal is only 0 to 36mv an span of 16mv. I would like to be able to...
  19. Stanfi

    TI ADS7870 A to D conversion

    I have an existing componet that uses an ADS7870 A to D converter chip. It is desired to have an A to D with a higher resolution. What are the odds of another chip existing that would be a direct replaced with a higher resoultion? Literally un-solder the ADS7870 and install the new chip in...
  20. Stanfi

    Conveyor Dead Load on a Belt Scale

    The company I work for manufacture's conveyor belt scales. I am trying to find some information/ guideliness to estimate a "deadload" weight that will be on the scale based upon the size of the customer's coneyor. Can someone provide me with some good reference numbers for belting and typical...

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