Crystal Oscillator – Parallel Resonant
2017-11-18
74HCU04 is a chip that was made for this purpose, HCT may not work for such a circuit. C1 and C2 can go to upto 33pF and R2 can beRead More
Precision Attenuator for Digital uC Control
2017-06-19
When Instruments are designed a analog front end is essential and also as most equipment have digital or microcontroller interface the analog circuit needs to have digital access. The CircuitsRead More
Precision Amplifier with Digital uC Control
2017-06-19
When Instruments are designed a analog front end is essential and also as most equipment have digital or microcontroller interface the analog circuit needs to have digital access. The CircuitsRead More
Application for 8051 mcu project
2017-06-07
Need an unique Application for 8051 mcu project ? – mail by J9Read More
Interface a uC to PC RS232 with MAX232A
2016-12-27
This is the standard configuration on how to Interface a uC like 8051 to PC RS232 with MAX232A. The UART or Serial port was not present in 8049/8749 chips whichRead More
555 watchdog for uC and uP systems
2016-10-23
When the microcontroller hangs due to a spike, EMI or RFI etc. the 7555 will reset the uC, if proper power supply design is done above circuit can also giveRead More
RS232 with Opto-Isolation
2016-07-15
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 Even though i hadRead More
Voltage to Frequency Converter AD Interface
2016-05-09
This is the Analog front end of the 80C39 Process Controller. The analog input is protected by a Zener barrier, low leakage. You could use clamping diodes too. The non-inverting low-offset ampRead More
