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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.

  • 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 skinnie339

  1. S

    alarm circuit for alarm clock

    Hi there, I'm builidng a basic ttl alarm clcok. I have all the major stuff built, clock counter etc. but I am stuck with implementing the alarm. I have a circuit which uses a comparator to compare the clock output with the alarm time set by DIP switches, but my problem is with the actual alarm...
  2. S

    Help with ISD chip EOM

    Hi, I'm using two ISD chips for playing back recordings, the problem is I want the second ISD to play when the first is finished. I want to use the EOM from the first to enable the second to playback, but the problem is that the EOM only stays low at the end of the message for about 10ns, and...
  3. S

    8-bit time switch

    there'll be more than two recordings. The ISD will play the message which is addressed from the counter output at that time, then after a delay will play the message addressed from the second counter
  4. S

    8-bit time switch

    Actually, looking back over it, I'll only be using 4 of the address bits of the ISD. These inputs are both coming from counters, and I want the ISD to play the message addressed fron the first counter, the after a delay, play the message addressed from the second one
  5. S

    8-bit time switch

    Hi there, I'm currently doing a project with an ISD 2548 ChipCorder chip, which has 8-bit input address, and I'm wondering if it's possible to switch from one group of 8-bit inputs to another group after a certain time delay, i.e. a switch is triggered which starts the process, the first...
  6. S

    learning about chipcorders?

    Application info I'm using a winbond ISD 25-- series chip in a project at the moment, I found some useful application documents here **broken link removed**

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