An increase voltage amplification is obtained by reduced direct current biassing of a diode connected as a collector load resistance, whilst retaining linearity.

This invention relates to a voltage comparator of a high resolving power and high accuracy wherein an input voltage and a reference voltage are respectively integrated to indicate as a digital quantity the ratio of times required for the integrated values to become proper equal values, an analog value corresponding with this digital quantity is an then multiplied by the reference voltage to obtain an analog error voltage, the difference between said error voltage and the reference voltage is amp...

A voltage limiter circuit and semiconductor structure employing field effect transistors and diodes adapted to be connected between a source of signal and the input of associated apparatus to provide over-voltage protection to the apparatus.

A semiconductor switching device is connected in shunt with an alternating voltage source to be regulated. A root-mean-square voltage sensing mechanism is coupled in shunt with the voltage source. A semiconductor breakover device is coupled between the voltage sensing mechanism and the gate electrode of the switching device for controlling the triggering of the switching device and thereby regulating the root-mean-square value of the voltage supplied to a load connected in shunt with the voltage...

Direct operating voltages for a television receiver are derived from an associated line scanning circuit of the type employing semiconductor (e.g., SCR) trace and commutating switches, each of which conducts for a portion of each line scanning interval. One voltage supply is derived by means of a full wave rectifier circuit coupled to an input inductance, the inductance being coupled from a main direct operating voltage source to a circuit point intermediate the trace and commutating switches. A...

In operation of an electrostatic spray gun through a low-valued series resistor, a circuit is employed providing voltage regulation to maintain the ionization current substantially constant. This is achieved through a feedback loop providing negative feedback to a voltage regulator so that as the current tends to increase, the voltage is reduced. The circuit provides an oscillator driven amplifier feeding a voltage rectifier and multiplier to drive the gun; the voltage regulator controlling the ...

A voltage clamp for a single-ended flyback converter provides partial leakage energy recovery and noise suppression. The voltage clamp is an improved version of a conventional RCD clamp. The voltage clamp includes two switches with different turn-off speeds. The voltage clamp includes a capacitor and two resistors. One resistor is connected in parallel with a capacitor and the other resistor is connected in parallel with the faster switch. The faster switch enables at least partial recovery of e...

A voltage regulator includes an output stage, an amplifier and a slew rate control circuit. The output stage furnishes an output voltage, and the amplifier interacts with the output stage to regulate the output voltage. The slew rate control circuit interacts with the output stage to establish a first slew rate for the regulator when the regulator is powering up and a different slew rate for the regulator after the regulator has substantially completed powering up.

The description concerns a voltage regulator (12) for regulating the output voltage (UB+) of an alternator (10) which is driven by an internal combustion engine. The voltage regulator (12) has an additional circuit (24) which evaluates the exciter current duty cycle (T) and supplies a signal (S1) at its output which is high when the exciter current duty cycle is high and low when the exciter current duty cycle is low. The circuit (24) is integrated in the voltage regulator (12) and the output si...

A voltage converter comprises an input, an output and a current control arrangement for controlling the output current of the voltage converter circuit. The current control arrangement comprises a first mode, when the voltage output by the converter circuit is above a threshold voltage, and a second mode in which the voltage output by the circuit is below the threshold voltage. The first and second modes are controlled by the same current control arrangement. The current control arrangement comp...