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solenoid valve Cv 2010-10-22
Why we use it, when to use it and when should we not use it,Why we use it, when to use it and when should we not use it
slpm instead of mass rate).
Low response time solenoid valves 2010-10-22
The response time of solenoids will depend a lot on how they are driven electrically. Driving the voltage prior to opening to a level about 40 to 50% of the pull-in voltage will reduce pull-in respon
Duty cycle of solenoid valves 2010-10-22
Looking at using a NO 3 way valve to shut off the boost signal to a waste gate. Porsche uses one on their 944 turbo to vary the boost as the EEM tells it.
PC board/microcontroller to drive solenoid valves in pulse mode 2010-10-22
I need to drive three DC solenoid valves (12V, 0.6A) with pulses that I can adjust in 10-200 ms range with 10 ms step. Pulses follow with 2-20Hz frequencies.
Water Well Impeller Damage 2010-10-21
De-zincification of the impellers is common in well pumps. It has more to do with the salinity of the water than with corrosion. The well drillers around here use the same metal and get 7-10 years of
Induced Voltage on Multi-Conductor Cable 2010-10-21
A system to minimise induction between conductors.Best design: Two cables seperated by several inches, one for power/control, another for feedback or whatever.
Pneumatic Solenoid Valves 2010-10-21
Looking for a 3-way, S/S, Normally Closed, 12vdc-low power Pneumatic Solenoid Valves for -40F service. One at a Cv=0.7 min and the other at a Cv=3.00 min.
AHU LAT Variation 48-56 deg F 2010-10-21
When LAT falls below setpoint, reheat masks the problem but causes additional ton-hours to be consumed. When the LAT rises above setpoint, fans work harder to sustain comfort conditions and humidity
