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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 orangemanorman

  1. O

    amplify a signal coming out of this module

    Okay Thanks Alec. but how can I make sure the current drawn from the module is not over 200mA?
  2. O

    amplify a signal coming out of this module

    Hello everyone: I have found this module on sale: https://www.electro-tech-online.com/custompdfs/2011/09/rfidlog_rfid_data_logger.pdf It outputs a signal at 5V and the external component can draw a maximum of 200mA. I was wondering how can I use an amplifier to amplify this signal to a...
  3. O

    Help with LM386 audio amp

    thanks for the reply I am trying to amplify a 134.2kHz signal for a RFID application. The reason i want to use an audio amp is because the fast speed. The 134.2kHz is coming out an Atmel chip at 3.3V TTL. I want to boost the current to around 1-2A to drive an antenna. Do you think an...
  4. O

    Help with LM386 audio amp

    Hello all, I am new to audio amp and I need your help/opinion What I am trying to do is maximize the current out of the audio amp. Out of Pin 5, I noticed a lot of diagrams have a small resistor in series with a capacitor connected to ground as well as the capacitor connected in series...

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