JPH01180833U

JPH01180833U -

Info

Publication number: JPH01180833U
Application number: JP7085988U
Authority: JP
Priority date: 1988-05-28
Filing date: 1988-05-28
Publication date: 1989-12-26

Description

[Brief explanation of the drawing]

第１図は本考案回路のブロツク図、第２図は本
考案の回路の動作を説明する波形図、第３図は本
考案回路の一実施例を示す図、第４図は従来例の
ブロツク図である。１……外部電源、２……インバータ、３……波
形整形回路、４……エツジトリガ型位相検出器、
５，１２……ローパスフイルタ、６……電圧制御
発振器、７……分周器、８……誤り補正回路、１
１，１３……ゲート、１４……トリガパルス発生
器。 Figure 1 is a block diagram of the circuit of the present invention, Figure 2 is a waveform diagram explaining the operation of the circuit of the present invention, Figure 3 is a diagram showing an embodiment of the circuit of the present invention, and Figure 4 is a block diagram of a conventional example. It is a diagram. 1... External power supply, 2... Inverter, 3... Waveform shaping circuit, 4... Edge trigger type phase detector,
5, 12...Low pass filter, 6...Voltage controlled oscillator, 7...Frequency divider, 8...Error correction circuit, 1
1, 13...gate, 14...trigger pulse generator.

Claims

[Scope of utility model registration request]

In the synchronous circuit of an inverter that operates synchronously at the same frequency as the external power supply, there is a waveform shaping circuit that converts the voltage waveform of the external power supply and inverter into a rectangular wave, and a waveform shaping circuit that operates on both the rising and falling edges of this rectangular wave. An edge-trigger type phase detector that outputs a voltage proportional to the phase of both rectangular waves, a low-pass filter that removes ripple components from the output voltage of this edge-trigger type phase detector, and a signal with a frequency proportional to the output voltage of this low-pass filter. In a phase lock loop consisting of a voltage controlled oscillator that generates 1. An inverter synchronous circuit comprising an error correction circuit that corrects input signals to make them consistent.