JPS58126496U

JPS58126496U - power amplifier device

Info

Publication number: JPS58126496U
Application number: JP2327782U
Authority: JP
Inventors: 憲一佐藤
Original assignee: 三洋電機株式会社
Priority date: 1982-02-19
Filing date: 1982-02-19
Publication date: 1983-08-27

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は可変遅延回路を用いた従来の効果音発生回路の
ブロック図、第２図３は第１図に示す回路の櫛形伝送特
性、第２図すは楽器音スペクトラムの１例、第３図は問
題の現像を解決するための従来例、第４図は本考案の電
力増幅装置のブロック回路図である。１．２・・・入力端子、３，３′・・・加算回路、４・
・・可変遅延回路、５，５′・・・非反転および反転増
幅回路、６．　６’・・・電力増幅回路、７．７’、８
・・・ラウドスピーカ、Ｓ□、Ｓ２・・・切換スイッチ
。Fig. 1 is a block diagram of a conventional sound effect generation circuit using a variable delay circuit, Fig. 2 is a comb-shaped transmission characteristic of the circuit shown in Fig. 1, Fig. 2 is an example of a musical instrument sound spectrum, and Fig. The figure shows a conventional example for solving the developing problem, and FIG. 4 is a block circuit diagram of the power amplification device of the present invention. 1.2...Input terminal, 3,3'...Addition circuit, 4.
...Variable delay circuit, 5,5'...Non-inverting and inverting amplifier circuit, 6. 6'...Power amplifier circuit, 7.7', 8
... Loudspeaker, S□, S2... Selector switch.

Claims

[Scope of utility model registration request]

(1) A first voltage amplification circuit, a second voltage amplification circuit and a variable delay circuit, each having a common input terminal, and a first addition circuit that adds the output of the first voltage amplification circuit and the output of the variable delay circuit. , a second addition circuit that adds the output of the second voltage amplification circuit and the output of the variable delay circuit; and a first addition circuit that amplifies the power of the outputs of the first and second addition circuits, respectively.
a power amplification circuit and a second power amplification circuit; a first loudspeaker and a second loudspeaker connected to output sides of the first and second power amplification circuits, respectively; and the first power amplification output and a second power amplification circuit. A power amplifying device for a musical instrument having a built-in sound effect generating circuit and comprising a third loudspeaker connected between a circuit output and a third loudspeaker.

(2) The first voltage amplification circuit and the second voltage amplification circuit have opposite amplification polarities.
A power amplifier for a musical instrument having a built-in sound effect generating circuit as described in 2.

(3) The power amplification device for a musical instrument with a built-in sound effect generation circuit according to claim 1, wherein the first power amplification circuit and the second power amplification path have the same amplification polarity.