Not impressive
Testing C26
Unstable control loop
Interface chips
DIGI 35 CPU A
Power supply investigation
TL084 quad opamp
Shunt resistors
C26 hack
C26 hack
Digi 35 CPU - voltage overshoot
Digi 35 CPU - voltage overshoot
Digi 35 CPU - voltage overshoot
Digi 35 CPU - voltage overshoot
Digi 35 CPU - voltage overshoot
Digi 35 CPU - voltage overshoot
Digi 35 CPU - voltage overshoot
LUFA-based avrispmkII clone - www.bravekit.com
TSOP38238 ready - IR control
TSOP38238 ready - IR control
Not perfectly aligned
Godjira is hungry!
Good quality clip
Doesn't look like 'just' 10mA to me :-(
WaveAce224_periodic_pulse_trigger_OK_005
WaveAce224_periodic_pulse_trigger_OK_004
WaveAce224_periodic_pulse_trigger_OK_003
WaveAce224_periodic_pulse_trigger_OK_002
WaveAce224_periodic_pulse_trigger_OK_001
WaveAce224_aperiodic_pulse_trigger_NOT-OK_003
WaveAce224_aperiodic_pulse_trigger_NOT-OK_002
WaveAce224_aperiodic_pulse_trigger_NOT-OK_001
bad current regulation
bad current regulation
bad current regulation
bad current regulation
bad current regulation
bad current regulation
Some shrinking tube
New clip
Lecroy probe alligator clip
Lecroy probe ground clip cable
Quite small PIR sensor
Upgrades!
Plugged right into the ISP header.
See also...
Keywords
Authorizations, license
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Digi-35-CPU - analog section


I've marked the spots where the traces were measured. The capacitor C26 (top right op-amp) seems to be the offending one, making the over-current regulation slow to kick in.
Traces: output voltage (yellow), output current (blue), over-current signal (green), combined voltage/over-current control signal (red) going to the power transistor drivers.
If you can provide further explanation, please comment!
Traces: output voltage (yellow), output current (blue), over-current signal (green), combined voltage/over-current control signal (red) going to the power transistor drivers.
If you can provide further explanation, please comment!
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