SU429503A1 - MULTIPLIENT FREQUENCY - Google Patents

Description

one

The invention relates to a pulse technique.

A frequency multiplier is known that contains a pulse amplifier, one output of which is directly and the other is connected to the inputs of differentiating circuits via a phase inversion cascade, the outputs of which are connected to the output terminal of the device through separation diodes.

However, the known multiplier has a relatively narrow operating frequency range.

The aim of the invention is to expand the frequency range.

To do this, a standby multivibrator, a frequency converter for voltage and a controlled multivibrator are introduced into the frequency multiplier, the start input of which is connected to the output of the standby multivibrator directly, and the control input through a frequency converter to voltage, and the output connected to the input of a pulse amplifier.

The drawing shows a block diagram of a frequency multiplier.

The frequency multiplier contains a square pulse shaper 1 assembled according to a standby multivibrator circuit connected to a capacitor frequency converter into voltage 2 acting on the controlled standby multivibrator 3, input

which is connected to the output of the multivibrator 1, and the output is connected via a pulse amplifier 4 to the phase inverse, the rtorium 5; the output of the pulse amplifier 4 is connected to the output of the phase inverter 5 via differentiating chains 6 and separation diodes 7.

The use of a square pulse current pulse former in each

cascade allows you to extend the operating frequency range of the input frequency, since the distortion of the waveform is eliminated, and differentiating the signal using differentiating chains allows you to eliminate the reduction

amplitudes of the signal with increasing input frequency.

The frequency multiplier works as follows. Shaper 1 generates rectangular pulses of constant duration, which are converted by a capacitor preamplifier 2 into a constant voltage proportional to the input frequency. This voltage controls the standby multivibrator 3,

which converts rectangular pulses of a constant duration, coming from the output of the sensor 1, into rectangular pulses of a constant duty cycle. The resulting pulses are amplified by a pulse amplifier 4 and fed to a phase inverter 5.

From the outputs of the amplifier 4 and phase 1 |, 5, the isolates of the constant pulse ratio are removed, the KOTOipbie are differentiated by chains $ and, passing through re, diodes 7, form positive pulses of twice the frequency. By connecting successively n analogous cascades at the output of the multiplier, we obtain the input frequency multiplied by. 2 times.

Subject invention

Frequency multiplier, containing a pulse amplifier, one output of which is directly connected with means), and the other one, the phase-inverted helmet is connected to the inputs of differentiating chains, the outputs of which are connected to the output terminal of the device through dividing diodes, which is: In order to expand the frequency range, a standby multivibrator, a frequency converter into voltage and a controlled multivibrator are inputted into it, the input of which is connected to the output of the standby multivibrator, and the control input Res frequency-to-voltage converter, and an output coupled to the input of the pulse amplifier.

R