The circuit shown in the figure below is from the 1993 Linear Technology Applications. The operational ones used are uncommon and the use of equivalents can be analyzed.
This circuit is from a 1980s Motorola documentation. The circuit can be set to fire from 60 to 120...
This amplifier was found in an old publication of 1990. With the changes, it may still be...
In the figure we have a very low current DC to DC converter using a 555. The circuit can have...