I`m way behind. I`ve built all all kinds of modules since my last blog post. With each module I build, I begin to understand how little I really know about electronics. I`m learning a lot and I can now recognizereoccurring themes-especially with Op Amps-but I don`tguaranteeany designs I post on here. I`m an amateur just trying to figure stuff ou
Click here to download the full size of the above Circuit.
t. So lets start with my updated ring modulator. The ring modulator itself is a passive circuit but there`s a huge volume loss after the signals(input and carrier) pass through the transformers. The previous design used two LM741`s to boost the signal before the transformer Diode ring. The circuit design itself wasn`t ideal, at high gain it caused high frequency oscillations and all it really did was overdrive the signal before the transformers. This is a sketch up of the schematic. Since I bought the Ringmodulator kit from Synthrotek, I really only had to focus on the amplifier aspect of the circuit. The two potentiometers control the incoming signal volume and arn`t really necessary. The circuit seems to work well, with little or no wave distortion. I`ve seen some modules which add a 555 oscillator circuit, but I`m not personally a huge fan of the 555 or using the Ring Modulator with a constant frequency, so I kept mine simple and use external oscillator signals. in the video I`m using two synthesizers. com oscillators with the ring modulator, I`m controlling the gate with a simple arduino random midi generator sketch I made. One oscillator is fed pitch voltage from the arduino and the other oscillator is fed pitch voltage from an ADSR. then my camera ran out of batteries. ENJOY!
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This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
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