World's Fastest PCB Manufacturing
My Message
Suggestions
Account

Get started now

Log In

or

Sign Up

My ALLPCB

My Orders Shipping Address Balance Account Settings My SNS Profile
0
  • Home
  • Instant Online Quote Alternate Text
    • PCB Instant Quote
    • PCB Assembly Quote
    • SMD-Stencil Quote
  • PCB Assembly
  • PCB Capabilities
  • Feedback
  • Resources
    • Sponsorship
    • PCB Softwares
    • Units Conversion
    • FAQ
  • About Us
    • About Us
    • Why Us
    • Contact Us
    • News
Log In Sign Up
  • Home
  • Instant Online Quote
    • PCB Instant Quote
    • PCB Assembly Quote
    • SMD-Stencil Quote
  • PCB Assembly
  • PCB Capabilities
  • Feedback
  • Resources
    • Sponsorship
    • PCB Softwares
    • Units Conversion
    • FAQ
  • About Us
    • About Us
    • Why Us
    • Contact Us
    • News
service@ALLPCB.com
Thank you very much for your valuable suggestion!
We will solve it as soon as possible!

Super Regulator Parts

2017/1/29 2:17:07

I recently bought two sets of super regulator boards and assembled them. My preferred parts supplier (Digikey.com) didn't have the BC556AP, so I used a BC557BG. I used a BC547B for the negative. Checking the spec sheets, they have exactly the same properties except for a maximal voltage of 50 rather than 80 volts.
I doubt this is related and assume that these parts work. However, to my great chagrin, my boards are not working properly. Rather than giving me the calculated output voltage, it gives me a constant +7.1V and -16.4V with the sensors properly connected. Changing the voltage divider resistor does not change the output voltage. I've checked the parts multiple times, but haven't discovered the problem. What am I missing here?
  • 735
  • 1
  • 14
Post Comment

    geovannefurriel

    2017/1/31 2:17:07

    Your post answered my questions. Thanks a lot.

    You might like

    Gabe

    • Threads

      6

    • Following

      0

    • Followers

      0

    PCB Prototype

    PCB Instant Quote

    x mm

    Quantity

    Quote Now

    PCB Assembly

    SMT-Stencil

    • 12
    Products & Service
    PCB Capabilities
    Aluminum PCB Service
    PCB Assembly Service
    SMT-Stencil
    Quotation & Feedback
    Online Auto-Quotation
    PCB Assembly Quote
    Quote by Salesperson
    Customer Reviews
    Customer Support
    FAQ
    Community
    Sponsorship
    Referral Program
    About Us
    About Us
    Why Us
    Contact Us
    News
    Resource Details
    PCB Software
    Units Conversion
    service@allpcb.com central_support@allpcb.com
    Follow Us:
    Facebook Youtube Twitter Tumblr Youtube
    Certification: Certification
    Our Preferred Partners: Our Preferred Partners

    Please send Gerbers to service@ALLPCB.com for quotation © ALLPCB.com,All Rights Reserved Privacy PolicySitemap

    Secure Site by GoDaddy.com This site has earned the McAfee SECURE certification.