Electric guitar preamplifier circuit - has single control potentiometer to select levels of harmonic content and distortion audible when string is struck
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Compressor for audio systems - has switching transistor stage to provide fast response to peak output voltage (NL 12.8.80)
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Compressor for audio systems - has switching transistor stage to provide fast response to peak output voltage (NL 12.8.80)
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Device for protecting an audio amplifier against overload or short circuit
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Electronic reverberation device
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Electronic starters for gas discharge tubes
NL7710136A
Speaker system.
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AMPLIFIER
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ELECTRIC SYSTEM DRIVEN BY WIND POWER
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PHASESTEREOSYSTEM
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Electronic echo apparatus
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Stereo sound reproduction system - has two variable delay lines controlled from single potentiometer to extend range of stereo effect (NL 21.2.78)
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Power amplifier with two output channels for electronic organ - has three cascade connected operational amplifier stages and filters
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Electronic echo device
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Echo device
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Echo device with noise suppression
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Device for protecting an audio amplifier against overload or short circuit
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Device for protecting an audio amplifier against overload and/or short circuit
