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US3808540A
|
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Loudness control
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US3588744A
|
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Amplitude compensated pulse duration modulator
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US3643161A
|
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Pulse duration modulation transmitter
|
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US3544919A
|
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Frequency modulated transmitter with crosstalk isolation
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US3475694A
|
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Automatic frequency control
|
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US3500248A
|
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Low frequency modulation network
|
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US3436708A
|
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Variable transformer having one coil conductor within the other
|
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US3484709A
|
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Solid state audio driver circuit
|
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US3497810A
|
|
Tuning circuit drive mechanism
|
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US3440566A
|
|
Pulse duration modulator having trigger circuit utilizing a modified triangular waveform
|
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US3506920A
|
|
High efficiency transformer utilizing pulse duration modulation to eliminate audio-rf transformer coupling
|
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US3437931A
|
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Shunt fed pi-l output network
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