This circuit is powered by a voltage of 4.5 V, being common in radios of the 60's. The circuit is from Mullard's transistors reference manual.
This flasher was found in an old Hands On, but uses common components. The optocoupler can be...
The LM12 is a high-power operational amplifier capable of providing a 4 A output current with a 40...
The circuit presented was found in the Linear Applications Handbook of the National Semiconductoir of 1994....