When the original cartridge prices of printers were extremely expensive, cartridge refilling and renewal works started to be done in many technical services in a short time, even there are places that do only this job, many manufacturers have taken various precautions to prevent this situation, one of these is that a chip is used in epson so that the printer does not work with refilled cartridges, but this obstacle was overcome in a short time. In some models, the printer is tricked with a program loaded into the computer, and in some, the chip is reset with an additional circuit.
EPSON cartridge chip reset circuit, which is based on PIC12F629, is used for the chip modules seen in the picture below, the circuit has a simple structure, works with 3 volts, you can load the hex software onto the microcontroller and use it.
VDD, SHT, SDT, CLK, RESET, DATA, GND connections do hold circuit is open until 5 seconds after the reset operation will take place is called
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Published: 2011/08/11 Tags: microchip projects, microcontroller projects
TL494 12V 24V DC Motor Speed Control Circuit 20A
Prepared for DC 20A motor speed control circuit (mk2) TL494 PWM control IC is used. Integrated IRF1405 N-channel MOSFET output transistors in the two units have the speed setting potentiometer 10k 100k if the frequency setting is adjusted with a 12-volt or 24-volt DC motor can be used. Speed control range TL494 0/100% idle current drawn from power max 20mA. 20 amps also connected to the supply source (battery, etc.). Voltage sensing feature, there is low ..
There ZIP file “FILE DOWNLOAD LINK LIST (in TXT format): LINKS-15925.zip” is password protected. What is the password and why post a file with a password on a public site?
pass: 320volt.com
This page is wlnderfull
great, is there a circuit for new chips?