This circuit was found in a 1970s General Electric documentation. This circuit already used an emitting LED. The circuit operates at frequencies from 50 Hz to 50 kHz with short pulses
MCP19124/5 Contains Independent Voltage and Current Control Loops Plus a Full Suite of...
This circuit was found in a 1980s documentation. The operational amplifier is of a common type at the...
This simulated circuit uses a 741 (Operational Amplifier), but other operational amplifiers can be...