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BBC OBA9 (1952) PUBLICThe BBC OBA9 audio gain control (circa 1952). Using a linear pot it gets nearly logarithmic gain. Since it is a non-inverting circuit the minimum gain is 1, but if you need an attenuator that goes all... by WanderingLogic | updated December 17, 2025 |
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bootstrap question PUBLICby WanderingLogic | updated November 17, 2024 |
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"bbc" volume control PUBLICby WanderingLogic | updated October 22, 2024 |
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MXR™ Headphone Amp (MX-152?) PUBLICby WanderingLogic | updated November 26, 2023 |
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1W Audio Amplifier PUBLICby WanderingLogic | updated November 07, 2023 |
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current mirror PUBLICby WanderingLogic | updated October 28, 2023 |