# Simple Sawtooth VCO

So I’m looking to do some analogue synthesizer design and one of the coolest sounding basic waveforms for a synthesizer (imo, of course) is the sawtooth wave. The sawtooth wave is pretty much described by its name – a wave that increases linearly then drops off as fast as possible, as if to imitate the […]

# 100W LEDs and boost converters!

With my final exam looming over the next two days, on power supply electronics, I decided to actually apply the knowledge I learnt for once to design a COMPLETELY makeshift boost converter for a high power LED I’d purchased previously (http://goo.gl/zFooZK – Link will expire!). I don’t really see the use for me to have […]

# Designing a 555 timer wannabe

As I’ve previously said I’m not actually very good at analog design – due to a mixture of not really being taught past the basics and maths not being my strong point! Nonetheless, I enjoy doing it and when the circuits I design work as I intend, its a great feeling of achievement, much more […]

# Designing a Triangle/Square wave VCO part 2!

As mentioned in the previous post (https://hsel.co.uk/2014/08/08/designing-a-trianglesquare-wave-vco-part-1/), the maths and somewhat lesser interesting theory will be discussed in this post! Now just as a disclaimer: I’ve just completed my first year of university and we do cover the shockley equation, we don’t however cover lambert W function and I don’t want to use an interative matlab […]

# Designing a Triangle/Square wave VCO part 1!

Its rare that I ever really dabble in any form of analog circuit design nowadays but I was a bit bored at work during my break and decided that it’d be fun to try and make a triangle/square wave VCO. I’ve been studying a lot about PLL’s lately and VCO’s are extremely important in the […]