Mains undervoltage and overvoltage alarm circuit 2
Source: InternetPublisher:刘德华河北分华 Keywords: Alarm circuit power supply BSP Updated: 2021/12/16
When the mains voltage is normal, relay KA is closed and the load power is turned on . When the mains
voltage is undervoltage (set by adjusting potentiometer RPz), KA is released and the load power is cut off. When the mains voltage is over -voltage (adjust
RPi setting), KA is released and the load power is cut off . At the same time, the alarm can be realized through the KA contact.
- Experiment on realizing photoelectric alarm using photosensitive devices
- LED acceleration and deceleration motion display composed of CD4017
- A white light LED power outage emergency light
- IRS2530D electronic ballast circuit diagram
- LED Flasher circuit using 2 transistors for LED switching
- "OR" logic element configuration circuit
- Resistor value selection circuit
- Power outage emergency lighting
- SC3071 touch step dimming light circuit
- Shock resistant soft start constant current LED lighting circuit
- stuttering correction circuit
- Rice mill circuit
- Farmland irrigation automatic control circuit a
- Frequency modulator composed of NE566
- Audio function generator composed of ICL8038
- Wien bridge oscillator circuit
- Inductive feedback oscillator circuit
- color discrimination circuit
- Small current generator circuit
- Sine wave signal generator circuit