| Electronics > Projects, Designs, and Technical Stuff |
| PWM and overvoltage fault detection |
| (1/1) |
| gaminn:
Hi, I created this schematic and I'm not sure if it does what I want. It is 74AHC123A dual monostable multivibrator. There are two inputs: 1) LED_OVERVOLTAGE: high when there is overvoltage, low when the voltage is normal 2) LED_PWM: 10 kHz PWM (that controls LED driver) There is one output, LED_FAULT. I want LED_FAULT go high when there is either LED_OVERVOLTAGE (immediately, without any delay, thus it is connected to reset input of the multivibrator) or when LED_PWM is stuck for several periods (this is set by R7/C5) in low or in high state. Will it work or can you help me modify it? |
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