Ph44core

Pearl Phaser PH-44 Core Part

Courtesy/Thanks to: Osamu Hoshuyama

Description: PH-44 is a guitar effector produced by Pearl. I found this circuit on a magazine in the mid 80s.
Q1 and Q2 work as OTA. LPF and HPF are also possible.
State variable filter may be possible.

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filter

guitar effect pedal

pearl ph44

ph-44

ph44

phaser

vcf

vcp

voltage controlled filter

voltage controlled phaser

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Files

ph44core.gif
	Schematics for the Pearl Phaser PH-44 Core part by Osamu HOSHUYAMA

Parts used

2SA1015
	Silicon PNP Epitaxial Type (PCT process)
2SC1815
	Silicon NPN Epitaxial Type (PCT process)
TL072
	Low-Noise JFet-input Operational Amplifier

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