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  1. autir

    Digital multimeter powered by adaptor?

    Thank you all for your replies. Audioguru, I realise that high-end multimeters (and equipment, in general) need quality input voltage in order to operate properly. Though most educative, your replies do not answer the original question regarding "el cheapo" equipment. From all replies I have...
  2. autir

    Simulation in Linux?

    I am a Linux fan. What can I say? ::) Anyway, which one is the best fow Win XP? (free software always)
  3. autir

    Simulation in Linux?

    For the past few hours I have been trying to install gEDA. Does anyone know of a good scematic design & simulation program in Linux? I know some titles but I do not know which is good and which is not. I am mainly interested in small circuits and simple, analog electronics.
  4. autir

    Digital multimeter powered by adaptor?

    What is a D shell? :-[ And why "unfortunately"? Do you mean that a decent multimeter must accept voltage of a very specific and small range in order to provide the expected accuracy? What happens when we power a cheapo multimeter with a somewhat different voltage than that expected? Does it...
  5. autir

    AC/DC adaptors: voltage over normal?

    What do you mean by the phrases "unregulated to boot" and "double up on" ? ::) I thought that the current listed on the device is the maximum allowable, and not the proposed value. What is the relationship between these two? I have dismantled the adaptor, it consists of an AC/AC transformer and...
  6. autir

    Digital multimeter powered by adaptor?

    I own two cheapo (~10 Euro each) digital multimeters, and have been paying fortunes for 9V batteries. Can I supply the multimeters with power coming from a DC PSU or an adaptor/transformer? What are the cons of this? possible problems?
  7. autir

    AC/DC adaptors: voltage over normal?

    Over the years I have collected several AC/DC transformers/adaptors. These adaptors provide higher voltage than their nominal value. Below follow some calculations I have made with one of them. The theoretical voltage of the adaptor is 3V DC. I connected several resistances in the adaptor's jack...
  8. autir

    New member says hi!

    Hello to all. Since I am new to this forum, I thought it would be good to introduce myself. I am a pre-graduate student at the department of informatics and telecommunications of the university of Athens (yes, I am Greek :)). Until recently I had been the type of person who likes electronics...
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