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# TH-VCO1 # TH-VCO1
![20170321_173027_](/uploads/4428fa7687d6cd4ab6811ccd9a308c23/20170321_173027_.jpg) ![20170321_173027__](/uploads/78765b329e94deaac886b66ad9cc4450/20170321_173027__.jpg)
## Basics ## Basics
The Thomas Henry VCO1 is a [Voltage controlled Oscillator/VCO](vco) for the Eurorack modular system. It has a coarse and fine frequency control and can output 3 different waveforms (PWM, Sine and Triangle). The pulse width of the PWM-output can be controlled via knob or control voltage. The output of the oscillator is constantly on – this is typical for oscillators in modular synthesizers. This is why it might be a good idea to pair them with a [Voltage controlled Amplifier/VCA](vca) or a [Voltage controlled Filter/VCF](vcf), which enables us to play the oscillator with different volumes, envelopes and timbres. The Thomas Henry VCO1 is a [Voltage controlled Oscillator/VCO](vco) for the Eurorack modular system. It has a coarse and fine frequency control and can output 3 different waveforms (PWM, Sine and Triangle). The pulse width of the PWM-output can be controlled via knob or control voltage. The output of the oscillator is constantly on – this is typical for oscillators in modular synthesizers. This is why it might be a good idea to pair them with a [Voltage controlled Amplifier/VCA](vca) or a [Voltage controlled Filter/VCF](vcf), which enables us to play the oscillator with different volumes, envelopes and timbres.
...@@ -25,3 +25,5 @@ The TH-VCO1 uses btw. a discrete Schmitt Trigger circuit built around two transi ...@@ -25,3 +25,5 @@ The TH-VCO1 uses btw. a discrete Schmitt Trigger circuit built around two transi
- [Discussion about the discrete Schmitt Trigger in the VCO-1 Oscillator Core](http://www.diystompboxes.com/smfforum/index.php?topic=99939.0) - [Discussion about the discrete Schmitt Trigger in the VCO-1 Oscillator Core](http://www.diystompboxes.com/smfforum/index.php?topic=99939.0)