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JPH03256415A |
PURPOSE: To suppress the occurrence of a loopback error when frequency modulation is performed by performing the time average of an output signal by obtaining a time information signal at the zero cross point of a frequency modulation si...
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JPH03249816A |
PURPOSE: To obtain a PWM circuit whose scale is reduced by sharing a counter and a comparator when two conventional PWM circuits are used. CONSTITUTION: For sharing the counter 6 and the comparator 7 when two regular PWM (pulse width mod...
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JPH0368569B2 |
An apparatus for changing an analog input voltage into a pulse rate particularly characterized by (1) the absence of substantial voltage across switching mechanisms, (2) the generation of pulses having precise charge content, and (3) the...
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JPH0349475Y2 |
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JPH0349511Y2 |
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JPH0397231U |
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JPH03226116A |
PURPOSE: To reduce heat loss and to enhance the efficiency by decreasing a collector-emitter voltage of a 2nd transistor(TR) at a saturation region when a prescribed voltage is kept to a 3rd TR and activating the 3rd TR at an active regi...
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JPH0390134U |
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JPH0342763Y2 |
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JPH0357715B2 |
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JPH0357643B2 |
An output circuit particularly adapted for use in a pulse width modulation amplifier having a significantly reduced power loss during switching times. Inductors are coupled in series with the signal channels of two push-pull connected sw...
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JPH03195116A |
PURPOSE: To reduce the influence caused by the fluctuation of a power supply voltage even when separating an error amplifier by generating a pulse width modulation signal by changing the central potential of an inclined wave in response ...
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JPH0355050B2 |
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JPH0339941Y2 |
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JPH0353871B2 |
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JPH0353803B2 |
PURPOSE:To decrease the delay and to attain excellent linearity even at a high oscillating frequency by applying respectively the 1st and 2nd reference voltages to the base of the 1st and 4th transistors (TRs) and using an output of a Sc...
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JPH03183207A |
PURPOSE: To prevent the malfunction of a waveform shaper by enlarging a protection action against surging by providing the resistor of a required value connected in series to a clamp diode and the waveform shaper which waveform- shapes a...
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JPH0336099Y2 |
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JPH03175814A |
PURPOSE: To reduce temperature dependency at a cut off frequency by using a PN junction capacitance for a capacitance and connecting a variable voltage source whose voltage value changes with the change of a temperature between the PN ju...
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JPH0348598B2 |
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JPH03162121A |
PURPOSE: To improve the versatility by constituting the circuit so that it can be used as a programmable timer counter to a user who does not necessitate the pulse width modulating circuit. CONSTITUTION: The circuit is constituted of a c...
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JPH0343810B2 |
Clock shaping means responsive to the frequency of an incoming clock signal (CLI) produce asymmetrical clocking signals whose high to low ratio varies as a function of the frequency of CLI. The asymmetrical clocking signals when applied ...
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JPH0342548B2 |
A signal sampling circuit comprising a switch network coupled to a transconductance amplifier for providing output currents proportional to input voltage, an input clamp network, and a charge storage device is disclosed. The amplifier si...
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JPH0365328U |
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JPH0342012B2 |
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JPH03148911A |
PURPOSE: To obtain the cooling air of a capacity corresponding to a temperature by storing a routine inverting the output potential of an output port and a table specifying the relation of an interruption time with respect to the number ...
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JPH0340966B2 |
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JPH0340528B2 |
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JPH0339423B2 |
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JPH03132109A |
PURPOSE: To always keep an output oscillating frequency proportional to an input signal voltage constant by converting a change in an output oscillating frequency of a pulse frequency modulator into a change in a rectified voltage and us...
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JPH0353035U |
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JPH0330943B2 |
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JPH0319903Y2 |
A transducer converts the amount of mechanical displacement of a member (1) to be detected into an electrical signal with the aid of magnetic induction. Two spaced apart, oppositely wound fixed coils (11, 12) are connected in series. Ins...
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JPH0389713A |
PURPOSE: To reduce the current consumption of a whose circuit and to improve efficiency using the output voltage of a switching regulator as an APD(avalache photo diode) bias voltage. CONSTITUTION: The circuit is constituted of a resisto...
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JPH0326572B2 |
A current to frequency converter having an operational amplifier with two inputs, an output, and a feedback capacitor connected between one input and the output to produce an output voltage waveform having a rate of change proportional t...
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JPH0334329U |
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JPH0377422A |
PURPOSE: To decrease an IC chip and to reduce the cost by using a timer circuit to constitute a pulse width modulation PWM circuit. CONSTITUTION: When a PWM output 27 is at an H and the timer of a timer circuit 1c overflows, an L pulse i...
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JPH0376441A |
PURPOSE: To transmit plural input signals simultaneously with one pulse signal by dividing one pulse into plural regions in an amplitude direction and applying pulse width modulation to each amplitude region respectively. CONSTITUTION: I...
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JPH0373609A |
PURPOSE: To reduce hardware and to decrease product cost by connecting registers for designating a PWM output width and resisters for storing the count by the share of the number of channels respectively in parallel and counting each cha...
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JPH0374176A |
PURPOSE: To reduce memory capacity by reading out basic data with interval corresponding to the target frequency of load, setting the time data in the real timer in a microcomputer every half period of carrier wave, then inverting the ou...
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JPH0368209A |
PURPOSE: To prevent the variation of the pulse width due to an unnecessary signal by converting the input signal, which has the unnecessary component eliminated by a filter circuit controlled by a frequency-voltage(F/V) converter, to a p...
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JPH0365058A |
PURPOSE: To detect a current value accurately and improve responsiveness and a processing speed by a method wherein the timing of current detection is synchronized with a circulating current mode and a PWM instruction signal. CONSTITUTIO...
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JPH0361864A |
PURPOSE: To prevent an oscillation, etc., by a method wherein, corresponding to reset operations representing polarity of a charge voltage, a reset charge device adopts a half value of a magnitude of an offset voltage limit in a certain ...
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JPH0320090B2 |
A pulse-width modulation circuit is provided which is simple in circuit construction and is free from the non-linearity of a waveform of a carrier signal. The pulse-width modulation circuit comprises an operational amplifier, a comparato...
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JPH0319728B2 |
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JPH0357313A |
PURPOSE: To obtain a prescribed control range without being affected with a change in a power voltage by providing a delay portion to part of a triangle waveform generated from a triangle wave generating section and using the triangle wa...
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JPH039200Y2 |
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JPH0322432U |
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JPH0341815A |
PURPOSE: To vary a start level of a pulse width modulation PWM waveform output optionally by providing a FF circuit and a start level setting circuit setting a period start level of a PWM waveform. CONSTITUTION: A PWM waveform generating...
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JPH0312399B2 |
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