Matches 1 - 50 out of 154 1 2 3 4 >


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7863978 RF amplifier system for neutralizing internal capacitance in a cavity  
An RF amplifier system having closed cavity containing an amplifying device that includes at least a cathode, an anode and a grid and wherein the amplifying device exhibits an internal...
3952259 Gain control apparatus  
A circuit for providing AC gain control while minimizing the change in AC impedance and eliminating any effects on DC biasing of following stages.
3629721 ORTHOGONAL FILTERS  
An orthogonal filter is synthesized from a transfer function. The elements are calculated exactly, as opposed to trial and error. Filters are provided having a first and second impedance connected...
3604954 TRANSISTORIZED KNOCK SIGNAL GENERATOR  
Improved electronic wave signal generator having one or more variable attenuating means for converting fixed voltage square waves to variable voltage magnitude square waves especially useful in...
3487325 HYBRID FEEDBACK AMPLIFIER  
1,242,752. Repeater amplifiers. WESTERN ELECTRIC CO. Inc. 20 Aug., 1968 [23 Aug., 1967], No. 39799/68. Headings H3T and H4R. An autotransformer 12 forms part of a feedback amplifier, and couples a...
3472954 VIDEO AMPLIFIER TRANSIENT RESPONSE CONTROL CIRCUIT  
3433894 AUDIO AMPLIFIER CIRCUIT  
3432764 SPECIALIZED ELECTROMETER CIRCUIT  
3403291 Intensity control circuit  
1,090,065. Cathode-ray tube circuits; transistor amplifying circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. June 17, 1965 [July 16, 1964], No. 25660/65. Headings H3T and H4T. The intensity...
3363192 Ultrahigh input impedance circuit  
3341655 Transistorized preamplifier for television cameras  
3323048 Dielectric measuring system including an amplifier having a non-amplifying cathode follower circuit  
3271693 Band rejection filter  
3249884 Direct-current-coupled alternating-current transistor amplifier  
3231728 Reset integrator  
3136951 Combined horizontal oscillator and sound if amplifier  
3106686 Potentiometer correction circuit  
3096937 Proportioning condition control system  
3090011 Logarithmic amplifier using common cathode positive compensating feedback  
3024658 Measuring system  
3017578 Equalizer  
2991423 Low-frequency regenerative amplifier  
2974290 V. h. f. television amplifier circuit  
2959380 Instrument control system for aircraft  
2947864 Apparatus for recording television signals  
2935556 D.-c. stabilized amplifiers  
2934711 R. f. amplifier  
2934599 Miller effect control of bandpass in vicinity of subcarrier frequency  
2931990 Class b amplifiers  
2924782 Tunable filter  
2922115 Signal translating amplifying system  
2920194 Device for variable amplitude correction  
789,934. Television. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 14, 1956 [May 17, 1955], No. 14925/56. Class 40 (3). [Also in Group XL (c)] Variable amplitude correction of a signal is obtained by...
2911487 Amplifying system  
2896027 Reflex amplifiers  
2807678 Amplifier for direct currents or for very low frequency currents  
2802063 Variable tone control circuit  
2801301 Amplifier having variable characteristics  
2790036 Electron-tube stabilized amplifying circuit  
2789162 Wave amplifying circuits  
2775657 Dual channel amplifying circuit  
715,658. Telephone transmission systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. April 16, 1952 [April 19, 1951; Feb. 8, 1952], No. 9531/52. Class 40 (4) [Also in Group XL (c)] In an amplifying...
2763732 High fidelity amplifier  
2752431 Amplifier gain control  
2750450 Series connected totem-triode amplifiers  
2743325 Unity gain amplifying system  
2739189 Grounded grid u. h. f. amplifier with gain control and constant input impedance  
2713620 Automatic volume control system  
2698883 High-duty-cycle pulse transformer circuits  
2684999 Stabilized direct current amplifier  
2677729 Differential amplifier  
2663765 Noise suppression device  

Matches 1 - 50 out of 154 1 2 3 4 >