Tag Archive: BASED


My H-Bridge consume 3ma@3.3v when there is no load and both inputs are zero,

    How can i reduce it ?
    my goal is <100uA
Image
Q2 and Q8 are SS8550 and Q3 and Q9 are SS8050, other Qs are 2N2222A

 ImageSSM2164 VCF AND MODULAR WORKSTATION

1. GATE INPUT–> THIS REQUIRES A 0-5V RANGE GATE SIGNAL,

THESE ARE FROM SEQUENCERS, OR MIDI-2-CV CONVERTERS.
2. ENV OUT–> THIS IS THE ANALOG ENVELOPE AR OUT. YOU

HAVE TO PATCH THIS TO CV IN OR FM IN TO MODULATE THE

FILTER WITH THIS. YOU CAN ALSO MODULATE YOUR EXTERNAL

GEAR WITH THIS. IT IS BASED ON -/+5V RANGE. SO IT IS

SAFE TO PATCH TO YOUR GEAR.
3.AIN(1) AND AIN(2) ARE AUDIO INPUTS. SOUND GOES FIRST

TO THE PRE-AMP(BOOSTER) THEN TO THE AIN LVL KNOB.
4.CV IN–>THIS IS A CONTROL VOLTAGE INPUT. PLUG AN

ANALOG LFO, AR ENV, VCO SIGNAL ETC.
5.FM IN–> THIS IS THE SAME AS THE CV IN BUT THIS IS BI

-POLAR GIVING YOU +/- SWEEP. CENTER IS ZERO VALUE.
6. EXTREME FM–> THIS IS SO THAT YOU CAN USE “LINE

LEVEL” SIGNALS TO MODULATE THE FILTER OR YOUR OTHER

ANALOG GEAR. THIS IS JUST A DIRECT OUT COMING FROM AIN

(1) BOOSTER(1). SO WHAT YOU DO IS PLUG IN YOUR FAVORITE

DRUM MACHINE OR VIRTUAL ANALOG IN AIN(1), TURN UP THE

BOOSTER TO AMPLIFY BUT HAVE AIN(LVL)1 AT ZERO SO YOU

DON’T HEAR IT. NOW PATCH FROM EXTREME FM OUT TO CV OR FM

INPUT. TURN THE FILTER ALL YOU WILL HEAR IT MODULATE TO

YOUR EXTERNAL LINE LEVEL SOURCE.
7. FILTER OUT–>THE IS THE UNBALANCED SIGNAL THAT GOES

TO YOUR MIXER OR AMP.
8. LFO OUT–>THE IS THE LFO OUTPUT. IT IS A SLOW

OSCILLATOR SO YOU CAN PATCH IT TO AN AIN TO HEAR IT IF

YOU WANTED TO MAKE A PORTABLE SOUND BOX.

BY ALL MEANS TURN UP THE REZ TO SELF-OSCILLATE AND GET A

CLEAN SINE WAVE. THIS IS ONE OF THE BEST ONES I HAVE