New answers tagged ttl
3
votes
Extending signal duration
Instead of pulse extension, I suggest using a 1-bit counter (i.e., a toggle flip-flop, which you could make with a D flip flop and an inverter if you have to) that changes state every time it is ...
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3
votes
Extending signal duration
This is not a pulse extension problem/solution, rather it is a memory issue to tell the PLC that there was a new ADC conversion pulse, then the PLC responds to clear that latch when it is ready and ...
- 136k
4
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Extending signal duration
TTL solution with active low input and output. R and C are calculated for 2ms output pulse width.
simulate this circuit – Schematic created using CircuitLab
- 1,859
2
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Extending signal duration
Maybe a diode, capacitor, and resistor?
Low input pulse would discharge the capacitor via diode.
A high input would then allow the capacitor to slowly charge back to high voltage again.
In addition a ...
- 89.2k
3
votes
Extending signal duration
Here's an example using a 555 timer in monostable mode. R1 and C1 form the timing network that control the output pulse duration, the output pulse will be \$t_{pulse}=1.1RC\$ . R3 is a load resistor ...
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1 wire to 2 wire bidirectional UART
Sneaky use of the upwards-pointing-arrow of the top PNP. Efficiently drawn, but requires visualizing Vcc simultaneously going both downwards and upwards. As Dave Jones would say, "trap for ...
- 12k
1
vote
Accepted
Connecting Arduino to Keithley external trigger
It's true that if you connect 5V to a microcontroller GPIO pin, without any limitations to current, and then configure that pin as an output pin and pull it to ground, a lot of current will flow and ...
- 27.4k
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