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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by Trevor

  1. T

    URL for PIC ideas, information and downloads

    :!: Although this website is aimed at a specific product (based on the 16F877 PIC), there is lots of useful information, ideas and free downloads. **broken link removed**
  2. T

    frequncy counter

    Frequency Counter :idea: This could depend on what parts you have available. One solution is to base your design on a simple decade counter with a store control (display held but keeps on counting), and reset control (resets counter to zero). You would then need to generate a 1Hz pulse fed in...
  3. T

    BC557 complement?

    :!: Hi, From recent help recieved I learn that the complement for the S9015 (PNP) transistor is the S9014 (NPN), also that an equivalent device for the S9015 could be BC 557, BC556 & BC558. :?: I now plan to use the BC557C (PNP), on looking at the specs I have the BC550C (NPN) could be used as...
  4. T

    ?S9015 data or equivalent

    :?: Can anyone please help. I'm after either data or equivalents for the following transistor: S9015, TO92case. In my search I have only found info on the S9014. Many thanks, Trev
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