My first oscilloscope and DIY power supply

August 17, 2017

At my journey with tinkering and electronics I gotten into some analog stuff, so to make my experiments possible I needed some measuring gear besides my simple multimeter... After a long hours of research (like before my every purchase :D ) I decided to buy the Keysight EDUX1002A from then newly announced series (Maybe I should have get the version with function generator bevause few months later I broke headphone jack in my MacBook playing with some DIY audio amplifier :D ). From EEVBLOG videos I found out that Keysight scopes (Formerly Agilent, formerly HP) have the most intuitive for me menu and buttons location, and In contrast to cheapest Rigol series (which was 4 channel) Keysight have separate knobs for each channel! And I really liked the look.

To celebrate my new gear purchase I designed and build a simple power supply based on 78 series IC. My requirement for it was to have a symmetrical regulated outputs, and around 1A current delivery (I needed symmetrical 12V/-12V for playing around with opamps). It was not the prittiest thing in the world, but It worked! And I until I bought a proper lab bench power supply in 2020.