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  1. Martaine2005

    Recommendation for a noob.

    Hi all, I have been lucky recently and been given boxes of electronics. From test equipment to components. It is all a little dated but nonetheless nice to have. Serial port Pico scopes etc probably not worth keeping but to my question... In the boxes I found several PicKit 2 and 3 programmers...
  2. Martaine2005

    Ripped off? We shall see!

    https://rover.ebay.com/rover/0/e11051.m43.l1123/7?euid=db29a9ae58c5444d9759e6bcd731ec6f&bu=43223891228&loc=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F352819165690&sojTags=bu=bu Hi guys n gals, I spontaneously hit the ‘Buy it now’ button. What have I done?. The listing seems legitimate but has...
  3. Martaine2005

    Two unrelated questions

    Hi guys/girls, I have two unrelated questions that I thought I would post here. The first is with regard to thermal paste vs thermal pads. Are there advantages or disadvantages to using one or the other?. I will be using one or the other for output transistors and regulators to heat sinks...
  4. Martaine2005

    Oscilloscope for dummies.

    hi guys/girls, I am fed up with Youtube videos omitting very important steps while connecting and disconnecting the probes. I understand the ground issues. That is all very clear. I have 2 oscilloscopes. 1 analogue and 1 digital. My analog is a 4 ch, 200mhz Fluke. My digital is a cheap chinese...
  5. Martaine2005

    Is this a THERMAL CUT-OUT?

    Hi guys, I have two identical 1:1 240v transformers which I believe are from UK bathroom light with shaver socket. In series with the LIVE (hot) to the transformers are little round devices about 8mm x 3mm thick. I have Checked them and they are both around 40 Ohms. Putting pressure both sides...
  6. Martaine2005

    Missing letter of the alphabet

    I just read this by an author @Geoffrey555 . He claims to have found the missing letter of the electricity alphabet is A. Please read this small article. Shouldn't the missing letter be E? Until now the physics of free energy has never been written. There have been hundreds of claims for this...
  7. Martaine2005

    QW-ms305D setting constant current?

    Hi all, my son’s friend has bought two qw ms305d psu’s amongst other test gear. They are new. He had a problem not being able to set constant current. My son said “my dad will know”!!. I agreed to go there yesterday (Sunday). Well, I d/l the manual in chinglish. I watched several YT vids. I...
  8. Martaine2005

    Joke: ElectronicsPoint is SPYWARE

    Be warned fellow members. Make sure your spyware definitions are up to date!! After using EP for several months, I decided to have a little clean up... Look what I found...
  9. Martaine2005

    Minimum test equipment

    Hi all, I am having a clear out of all my RC helicopters, motorbikes, boats etc. All mainly from early 90's. To make room for some test equipment. Now I know Fluke and Agilent etc are out of my price range as a novice even if they are second hand. I am not a minimalist by any stretch of the...
  10. Martaine2005

    Component ID

    Hi guys, I have been scavenging components from an old dvd player board smps. Two components look exactly like a standard through hole transistor. Black with the flat front But only have two legs.. They each have the markings N5S and N25S. Google wasn't my friend today.. Could they possibly be...
  11. Martaine2005

    Mobile phone chargers

    Hi all, what is the difference in Mobile phone chargers and power adapters? My old LG phone chargers label says ' travel adapter. input 100/240v , output 5.1v 0.7a. And so do all my other chargers and adapters allbeit different outputs. Can I JUST cut off the connectors and use them as '...
  12. Martaine2005

    Been doing it all wrong!!

    Hi guys, I am a newbie here but thought my formulas were correct....Danggg.. Ohms law. V / I * R or a variation of the same. I just read the STICKY on L.E.D's and formulas to figure out Resistance and Current.. My brain tonight is like mushy peas. I thought .. 12v supply.. LED Vf 2v @20mah Was...
  13. Martaine2005

    Replace internal AC tranny for DC adapter?

    Hi guys, just joined as I am learning electronics as a NOOB!! The Question. Can I replace an internal 220v-9v .5A tranny with an external DC 9v-1.5A adapter? Obviously it can be done, but I am a little confused as the pcb is already full wave rectified. So, with a 9v DC adapter going through the...
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