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A method for inducing cats to exercise consists of directing a beam of invisible light produced by a hand-held laser apparatus onto the floor or wall.
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| Number | Title | Issue Date |
| 6069503 | High value FET resistors on a submicron MOS technology A method and apparatus of biasing a transistor to perform as a resistive device in an integrated circuit die is disclosed. A base lead of a transistor is coupled to a first lead of the transistor. A voltage is applied to a first lead such that the voltage... | 05/30/2000 |
| 5604461 | Transformerless output vacuum tube audio amplifier An audio amplifier including a series connected vacuum tube output stage for driving an audio loudspeaker. The preferred amplifier uses the output signal as a floating reference for an intermediate stage to prevent output stage degeneration for producing ... | 02/18/1997 |
| 4321552 | Amplifier comprising a first and a second amplifier element An amplifier comprising a first and a second amplifier element, whose outputs are connected to a load, a difference circuit which comprises a comparator, in which the output signal of the first amplifier element is compated with the input signal thereof t... | 03/23/1982 |
| 4112386 | Modular radio frequency amplifier having a gain variable by external passive component selection A broad-band radio-frequency amplifier is characterized by a gain which may be adjusted over a relatively large range, and which remains stable over the range of gain adjustments. The amplifier includes first and second transistor pairs each arranged in a... | 09/05/1978 |
| 4066975 | Audio amplifier with improved stability In a wide-band electronic AC amplifier, the first stage is direct coupled to a split load phase inverter which is RC coupled to a push-pull power output stage and the output is obtained through transformer coupling with a portion being returned to the cat... | 01/03/1978 |
