A Universal RLC-Box
Select a value out of 7...8 decades from resistance, capacitance and inductance and connect them in series, parallel or isolated from each other,
The Box is now available for sale here:
https://www.ak-modul-bus.de/stat/laborzubehoer.html
When developing electronic circuits (or repairing devices) you often have to determine experimentally the value of a resistor, capacitor or inductor. Sometimes you even have to insert a little highpass or lowpass-filter and determine the best cutoff-frequency.
So instead of testing this with dozens of components or combinations of combinations on a breadboard take a look at this versatiel RLC-Box.
With the rotary switches you can quickly select a resistor (1 Ohm...100 Megohms), a capacitor (10pF...1.000µF) or an inductor (10nH...150mH).
Best is that with 2 additional triple-throw switches you can connect the 3 components in series or parallel combinations.
That way you can easily create a variable lowpass-, highpass-, bandpass-, bandstop-filter or a RLC tank-circuit (series or parallel).
I created the prototype for my own demands many years ago. When I was using it on one of my YouTube-Videos there always were people asking if and where this box is available.
https://www.youtube.com/Kainkalabs
So I finally decided to polish it up a bit, create PCBs for the rotary switches and the faceplate and make this available as a Kickstarter project:
https://www.kickstarter.com/projects/rogerleifert/a-versatile-rlc-box-for-the-electronics-lab
After the campaign ends I will publish the PCB-files under the Open Source Hardware license. But don´t expect that you can save a lot of money by building one of your own.
The cost for the major parts + PCBs + case add up to more than 100 Euros in volume.
In the mean-time I will publish here and on the kickstarter page some progress reports and background info.
If you have any suggestions or ideas for improvement, please comment
Roger
https://www.ak-modul-bus.de/stat/laborzubehoer.html
When developing electronic circuits (or repairing devices) you often have to determine experimentally the value of a resistor, capacitor or inductor. Sometimes you even have to insert a little highpass or lowpass-filter and determine the best cutoff-frequency.
So instead of testing this with dozens of components or combinations of combinations on a breadboard take a look at this versatiel RLC-Box.
With the rotary switches you can quickly select a resistor (1 Ohm...100 Megohms), a capacitor (10pF...1.000µF) or an inductor (10nH...150mH).
Best is that with 2 additional triple-throw switches you can connect the 3 components in series or parallel combinations.
That way you can easily create a variable lowpass-, highpass-, bandpass-, bandstop-filter or a RLC tank-circuit (series or parallel).
I created the prototype for my own demands many years ago. When I was using it on one of my YouTube-Videos there always were people asking if and where this box is available.
https://www.youtube.com/Kainkalabs
So I finally decided to polish it up a bit, create PCBs for the rotary switches and the faceplate and make this available as a Kickstarter project:
https://www.kickstarter.com/projects/rogerleifert/a-versatile-rlc-box-for-the-electronics-lab
After the campaign ends I will publish the PCB-files under the Open Source Hardware license. But don´t expect that you can save a lot of money by building one of your own.
The cost for the major parts + PCBs + case add up to more than 100 Euros in volume.
In the mean-time I will publish here and on the kickstarter page some progress reports and background info.
If you have any suggestions or ideas for improvement, please comment
Roger
Updates van de auteur
KainkaLabs 6 jaar geleden
Then 2 screenshots of the layout of one of the PCBs for the capacitor switch and the inductor switch.
All resistors and the lower-value capacitors (10pF...68nF) will be SMD in 1206 size.
The lower values of the inductors will be half SMD, half THT as you can see on the screenshot.
The higher values of the inductors and the capacitors will all be THT because you don´t get high-quality film-capacitors (or electrolytics) and inductors in the desired voltage rating (>=50VDC) in SMD.
The (preliminary) ratings for the resistors are 1%, 500mW, 50VDC in 1206 SMD, for the capacitors 5%, 50V NPO/COG ceramic capitors from 10pF...68nF, then 5% polypropylene and mylar capacitors up to 6,8 or 10µF and then 20% electrolyts. For the inductors Fastron types from the 1206AS, 1206F, 07HCP, 09P and 11P-series.
The PCB for the larger value capacitors to be soldered to the rotary switch (479kb)
The PCB for the smaller value inductors to be soldered to the rotary switch (273kb)