Electronics – Page 5 – Geronimo/370

Oscilloscope first measurement

Posted on2017-07-24

Oscilloscope first measurement Measuring voltage spikes I have an old analog power supply unit (PSU) and two new ones (see picture to the right). I thought I’d try to capture what happens with the voltage of one of the new PSU’s when I switch of the old analog one. So… Read the rest

Lissajous curves

Posted on2017-07-24

Lissajous curves As you can see, I started with a nice Lissajous curve. This can be accomplished by putting a sine wave on both channels of the oscilloscope and making sure that the frequency on one channel has a specific ratio to the frequency of the other channel. On the… Read the rest

New Oscilloscope on the bench

Posted on2017-07-24

New oscilloscope on the bench Positioned on top Today I did my first experiments and measurements with the new oscilloscope. But first I had to find a logical spot for it. I had planned to put it on my desk, next to my function generator (see this post). For now,… Read the rest

Oscilloscope arrived!

Posted on2017-07-24

Oscilloscope arrived! My new RIGOL DS1052E oscilloscope arrived. I’m one happy nerd now… Here it is, booting up: Of course it had to be tested. There’s a calibration signal, generated in the scope itself, especially for the purpose of calibration. So I hooked one of up the probes to… Read the rest

My Workbench

Posted on2017-07-16

My Workbench Cleaned up my workbench today, to make room for my new RIGOL. It will fit in between the signal generator and the parts cabinet, see video below. Really satisfied with my little setup so far. The power supplies still need to come forward a little bit, I’m thing… Read the rest

Digital oscilloscope 2

Posted on2017-07-14

Digital oscilloscope 2 As you guys perhaps read in this post, I had purchased a Velleman WFS210 wireless digital oscilloscope. The intention was to go and use it from an older iPad (on iOS 9. This should have worked (it did apparently with a previous version of the firmware), but… Read the rest

EEPROM Programmer

Posted on2017-06-14

EEPROM Programmer For the more complex decoding on my 8 bit computer like for example the Control Unit I will use an EEPROM, not some elaborate complex circuitry. For this I must be able to program an EEPROM. On his Youtube channel Ben Eater describes one based on an Arduino… Read the rest

Digital 25MHz DDS Dual-channel Signal Generator‎

Posted on2017-06-10

Digital 25MHz DDS Dual-channel Signal Generator‎ The latest addition to my electronics lab is a wave (or function) generator. It’s a digital one and it can, at least theoretically) be operated from a computer over USB. It features two independent channels, each of which can generate several wave forms: … Read the rest

Build your own 8-bit computer

Posted on2017-05-07

Build your own 8-bit computer I found this amazing playlist in which Ben Eater describes building an 8-bit computer in a way that really can help you understand how computers work on a deep level, from the ground up. Perhaps, when time permits, I will try this build myself…… Read the rest

New power supplies

Posted on2017-04-082 Comments

New power supplies Welcome to my two new DC LAB Power Supplies: the Velleman LABS3005. They can each supply 0-30 Volts (adjustable) and 0-5 Amp’s (also adjustable) power, with a ripple voltage of 2mV and a ripple current of 3mA. I’m a happy hobbyist right now… You can see the… Read the rest