This circuit is from a 1978 Texas Instruments optoelectronics manual. The trimpot adjusts the LED current. Other currents can be adjusted if they are within the capacity of the FET.
This circuit can flash for up to 30 months using alkaline batteries as shown in the table next to the...
This circuit accurately monitors a 5 V TTL source. The circuit is from National Semiconductor's Linear...
The purpose of this circuit is to match two operational amplifiers that operate with different...