Portefolio

My career, easely accesable

Robin Broekman

Entry 1: Audio amplifier - EE MOD 3 2018-2019

This project is still one of my favorates. Mainly because you produce a tangiable object that actually does something "useful". The project revolves around building an amplifier using a 10 Volt rail and transistors. In our case, this is done by using a class A amplifier to generate a 8V peak to peak from the low energy input audio. Thereafter, amplifying the current using a AB-class amplifier. Here, i have solely designed the entire A-class part and helped to build the AB-class as well. Having done most of the designing (A-class) using LT-spice in a trail and error fashion the SSEQ and biasing calculations where still to be done. This wasnt easy as I had devoloped quite an unconventional way of amplifiying the signal. Using 2 CCC-CEC combinations 100mV input is converted to an 8V peak to peak signal. In the end i did manage to calculate everything through and happened to learn a lot about Bipolar Junction Transistors, and their impact on a circuit.
I have done this project with Tom Brunning and Emilio cuertez in order to finish Module 3 of Electrical Engineering on the University of twente.

Entry 2: FM-radio transmitter - EE MOD 3 2018-2019

In this project me, Tom and Emilio made a FM radio transmitter that had a range of about 100m. This was done using an harmonic oscillator @107Mhz and a varicap which changed the oscillating frequency by about 40kHz. This project started of as a real struggle since these high frequencies come with all kinds of paracitic charactaristics. This meant that even a piece of wire could be considered as an inductor. However, we did get it to work and it was worth it. It is kind of surreal that when you take a random standard radio it plays your music if you tune into the right channel. The final product is displayed next to this post.
I have done this project with Tom Brunning and Emilio cuertez in order to finish Module 3 of Electrical Engineering on the University of twente.

Entry 3: Interactive video - CT MOD 1 2019-2020

pic of project

The project assignment of Creative Technology module one was to make an interactive video with a group of 5 people. The main objective of this project was to introduce the students to project work and all its difficulties. We were lucky to have quite a decent team. Although we did start a bit late on the project as we didn't know we had so little time. This put our teamwork to the test, and in my opinion we prevailed. We ended up ditching 2 storylines from our script, but the others turned out rather well. The protagonist of our story was a slightly chizophrenic boy named Thomas. Thomas was mostly antagonized by his narrator which he was introduced to in the start of the movie. The users could interact with the movie by making certain choices. Thomas dies on multiple storylines, but also finds his true love in one of them.

Making this film was a fun process, though quite stressful. Although the end result isnt as good and with as much content as we had initially planned, I am proud of what we managed to do within our limited time. I do not think we chose the easiest path by making a movie with multiple genres depending on the choices you make, but we learned a lot from doing it.
I have done this project with group Yankee, consisting of: Mark, Marc, Paul, Reinier and me.