The simplest Triangle/Square wave Oscillator for your SynthDesigned by Electronic things... and stuff, Ships from France
What's this? It's a simple but very stable triangle and square wave oscillator. The main purpose of this module is to be used either as a LFO (Low Frequency Module) or as the main oscillator in you...Read More…
It's a simple but very stable triangle and square wave oscillator. The main purpose of this module is to be used either as a LFO (Low Frequency Module) or as the main oscillator in your drone synth. It can be incorporated as well in a modular Synth (Eurorack for example).
The circuit is a classic integrator and Schmitt Trigger duo. The "integrator", (a constant current generator) charges and discharges a capacitor. The Schmitt Trigger flips over the charge/discharge cycle.
The frequency range is impressive, from less than a Hertz to thousands of Hertz. Frequency is adjustable with the potentiometer. No CV input. Simple.
You can use it to drive CV-able modules. Just plug a mono jack and link it to your VCO or VCA or VCF or any other VCxxxx. You can also use its output as an audio output signal. Be carefull though, output level is way out of "line" level standards.
Check my Attenuater/Inverter module if you need to adapt or invert its output.
Max Output Peaks : +10V / -10V.
Assembling this module is pretty easy and should take less than an hour. You only need cutting pliers, solder tin and an iron.
Power requirements: +12V / GND / -12V @ less than 20 mA Eurorack power connector available.
The PCB is only 5 x 5cm
In the Kit option, you will find the following: Resistors, 16mm potentiometer, connectors, capacitors, IC and its socket.
The Front panel is a 4HP 3mm thick MDF (wood particles) LASER etched.
The Simple LFO is featured in Kristian Blåsol's great video series "Modular In A Week" episode 4.1: Modular in a Week 4.1
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