Mxr Phase 90 With Lfo Modifications 电路图.pdf

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1、10K 10K 10K 10K10K10K10K10K10K10K 0.01 0.01 0.05 0.05 0.050.050.05 0.05 10K47K 22K 22K 22K 22K +9Vdc +9Vdc+9Vdc+9Vdc+9Vdc+9Vdc +9Vdc Vref?=?3V 470K 470K 150K 47K 150K 47K 150K 150K 56K 500K 1M 3.3M 250K 10uF 15uF 2N5952 (4x) input?jack output jack Phase?90?-?Original?Schematic Copyright?1998,?1999?-

2、?2006?R.G.?Keen All?rights?reserved.?Fair?use?only?with?this?notice?included.?See?.?No?posting?from?other?web?sites. 200K 2N4125 Mix Bias Width 10K 10K 10K 10K10K10K10K10K10K10K 0.01 0.01 3.3uF?NP 0.05 0.05 0.050.050.05 0.05 10K47K 22K 22K 22K 22K +9Vdc +9Vdc+9Vdc+9Vdc+9Vdc+9Vdc +9Vdc +9Vdc Vref?=?3

3、V 470K 470K 150K 47K 150K 47K 150K 150K 100K 100K 5K5K 51K 56K 1M 3.3M 250K 15uF 2N5952 (4x) input?jack output jack Phase?90?with?ramp?up/down?LFO Copyright?1998,?1999?-?2008?R.G.?Keen All?rights?reserved.?Fair?use?only?with?this?notice?included.?See?.?No?posting?from?other?web?sites. 200K 2N4125 Mi

4、x Bias Width 51K 51K 10K Hi?SpdLow?Spd 2N5088?or 2N3904 2N5088 Ramp Speed100uF Original?500K?speed?pot?replaced?by?Hi/Lo?Spd 5K?pots?and?up/down?switch.?10uF?integrator?cap replaced?by?2N5088/LM358?integrator?circuit. LM358?or?LM2904 LM358?or?LM2904 1 2 3 4 5 67 8 Optional?diode: only?used?if no?oscillation. The?phasing?opamps?can?be TL072,?etc.?opamps, but?the?LFO?opamps?MUST be?LM358?or?LM2904 because?of?input-near-ground?and?output-near- ground?issues. RadioFans.CN 收音机爱好者资料库