TTL to TTL shield (CB8078E)

In the figure we have a basic shield circuit with TTL to TTL optical isolator. For the emitting LED the voltage can be different from 5 V.

| Clique na imagem para ampliar |

Modulated light receiver (CB20884E)
If we modulate a beam of light from an LED, for example, we can receive this beam of light at a...
Voltage Controlled Inverter Shield (CB13305E)
This circuit is from a publication of the 70s, but it can be easily assembled with the BC548. The...
Biestable Photo Automation (CB13175E)
In the circuit in the figure, when a pulse of light falls on the LDR, the circuit arms with the...