Power management

Why is the voltage high?

I’ve bought 1000+ L7805CP voltage regulators. On all the data sheets it say there is a +-10% voltage tolerance yet the voltage I’m getting is +55%. It says it’s input voltage range is 35v - 7v and its output is a nominal 5v (4.5-5.5v) yet I’m getting...

Problem calculating snubber component values for triac drive yields negative resistor?

I've tried to make a 24VAC triac switch driven by a triac optocoupler. It doesn't seem to be turning on fully. Direct connection of load to 24VAC measures .24amps but through the triac when on is only .13amps.I've gone back to the drawing board using...

In IC ST1S41, If EN pin is off what exactly will happen to the IC ? I mean, If EN is below 0.4V Does only switching stops or every operation of the IC stops

Is it dangerous to short circuit D1 on STM32F407 Discovery

Hi,i damaged D1 on my STM32F4 Discovery board. Afterwards, i removed D1 and shorted there. Now, it works. Can i use it or is it dangerous?

Help me to understand AN4998 reference design for IPS161H single high side driver

Can someone tell me the purpose of the elements highlighted in the attached scheme? I can assume that capacitor C1 is a DC blocking capacitor, but why is it so big value? The purpose of R16 and C10 I can not understand

looking for the MCU which have 16 PWM channel . please suggest

Required PWM - 16 Channel for the motor controller application .please suggest the best MCU with support RTOS.

st motor control work bench have function for undrestand short circuit on otput

any one know when make project with st motor control have function protect short circuit start put low voltage and check current if unormal high undrestand out put is short and shot down pwm output

How can I activate the internal clock in STSPIN32F0?

How exactly can I program the internal clock in the STSPIN32F0 chip?

Documentation of drive and limitations for STEVAL-ESC002V1 / STSPIN32F0A is missing

I have been going through the datasheets to find the capabilities of the bootstrap system in the STEVAL-ESC002V1 board and the STSPIN32F0A and can not find it.How long can the system hold a motor phase high, and how long does the bootstrap hold a cha...

STPM32 active and reactive measurement results are not consistent.

Hi All,STPM32 active and reactive measurement results are not consistent even after calibration. STPM32 evalboard and ST software are used for tests. We have calibrator as a source. Voltage, current, frequency is accurate but active and reactive ener...