![Quad Ringmodulator: Front view](https://wby12p2ks.homepage.t-online.de/wrdprs/wp-content/uploads/2022/03/Quad_Ringmodulator_front-736x1024.jpg)
This is the 12V Euro version of my NGF dual version. It uses the now obsolete LM1496 balanced modulator -demodulator. But you can still source them and I have some in my stock. So I decided to make a PCB and module. I started with the original Elektor Formant schematic published in “Formant Erweiterungen” p35ff. I left out the microphone and envelope follower part because I already have such modules. I have added input buffers and raised the signal level to my 10Vpp used throughout my system.
Specs and features
- Quad Ringmodulator
- 10Vpp input and output
- Runs on +/-12V and +/-15V
- Power consumption around 70mA each rail
The documentation and the Gerber files for download can be found in my website.
![Quad Ringmodulator: Schematic control board](https://wby12p2ks.homepage.t-online.de/wrdprs/wp-content/uploads/2022/03/Quad_Ringmodulator_090_F_schematic-1024x705.png)
![Quad Ringmodulator: Schematic main board](https://wby12p2ks.homepage.t-online.de/wrdprs/wp-content/uploads/2022/03/Quad_Ringmodulator_090_B_schematic-1024x705.png)
![Quad Ringmodulator: Populated control PCB](https://wby12p2ks.homepage.t-online.de/wrdprs/wp-content/uploads/2022/03/Quad_Ringmodulator_control_PCB-841x1024.jpg)
![Quad Ringmodulator: Populated main PCB](https://wby12p2ks.homepage.t-online.de/wrdprs/wp-content/uploads/2022/03/Quad_Ringmodulator_main_PCB-1024x881.jpg)
![Quad Ringmodulator: Back view](https://wby12p2ks.homepage.t-online.de/wrdprs/wp-content/uploads/2022/03/Quad_Ringmodulator_back-664x1024.jpg)
![Quad Ringmodulator: Side view](https://wby12p2ks.homepage.t-online.de/wrdprs/wp-content/uploads/2022/03/Quad_Ringmodulator_side-419x1024.jpg)