Posted by dapj20 on Jan 14, 2019 in 80C31-SBC, Discrete-Circuits, Embedded-Systems
I had to once interface an high voltage circuit to PC, The uC had to communicate thru RS232--Comm port--Serial Port. Part of the 80C31 8051 SBC
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Do-It-Yourself Circuits and Projects
I had to once interface an high voltage circuit to PC, The uC had to communicate thru RS232--Comm port--Serial Port. Part of the 80C31 8051 SBC
Variable Parameters like voltage, current can be obtained by using a Digital Potentiometer. Microcontrollers or Counters operate FET CMOS Analog Switches. The switches configure resistor networks to adjust circuit performance. It could be a Speed Control of a Motor or Brightness of a Lamp. Volume controls and Tuners also can use this.
This is a simple toy that has many applications. Any object that breaks a light beam will trigger a relay to on condition for a period of time.
Optical obstacle switch - del50006
Description - The 555 monostable has a 1 second period, If pin 2 gets low trigger pulses of a frequency more than 1 Hz, the output pin 3 will remain high, if the trigger pulses came in 10 second delays then output will go on and off, so also the relay and the electrical load on relay contacts. Like an integrator, it will not operate relay very fast. Even in a fridge stabilizer they put something like this else the compressor motor is damaged on frequent black-brown outs.
The circuit uses opto-coupler MOC3041 of Motorola and the Triac BTA16-600 of STMicro as a solid state switch or relay. Four Switches boost or buck the mains voltage, keeping output within limits.
Solid-State Stabilizer Step up 110V AC
It also uses the LM324 quad opamp from National Semiconductor which is low power and single supply. As the MOC3041 switches the Triac at zero crossover there is no inter-winding short of transformer on crossover hopefully, the control circuit is designed in such a way that more than one triac will not be turned on at a time, i would like you to give feedback.