Oberheim PS-1 Phase Shifter 电路图.pdf

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1、+ - + - + + +15 -15 -15+15 +15 -15220K 1M1M 150K 10K 10K 0.33uF 10K 33K 10K 10K FET Bias 2 3 1 6 5 7 8 Medium Phase Fast Phase 1M4.7K100K 10K 220uF4.7K 10K 33K 4 Ampl. Osc. 33K 10K 4.7uF 150K + - + - 100k 100k 0.01uF 100k 100k 100k 0.01uF 100k 6 5 7 2 3 1 +15 8 4 -15 + - + - 100k 100k 0.01uF 100k 10

2、0k 100k 0.01uF 100k 6 5 7 2 3 1 +15 8 4 -15 + - + - 100k 100k 0.01uF 100k 100k 100k 0.01uF 100k 6 5 7 2 3 1 +15 8 4 -15 -15 +15 +15+15+15 -15 33K 10K0.33uF 10K 10K10K 100K 10K 100K 1M 1M 10K 4.7K 4.7K 4.7K + + AC Switch, Power Ind, Fuse 115 VAC 470uF 25v 270 1N965 +15 -15 270 1N965 470uF 25v (Pin 8

3、0f ICs) (Pin 7 Of ICs) 1N4002 (4X) Red Wht Grn Blk Blk All ICs are 1458 dual op amp. All bipolars are 2N3638A. Adjustment procedure: 1. FET Bias: With Osc.Ampl. trimmer fully counterclockwise, adjust FET Bias so that audibile phasing sound is in the middle of its range. 2. Osc. Ampl.: Adjust for desired depth of phasing sound. 3. Output Offset: adjust for minimum click when Off/Slow Phase switch is operated. 1M 10K -15+15 DC offset INOUT selected 2N4302 2N4302 2N4302 P1069C -15 Oberheim PS-1 Phase Shifter 4.7KRadioFans.CN 收音机爱 好者资料库