Linear Ohmmeter LM11 and TL431 (CB14548E)

We found this circuit in Motorola's Linear Databook in 1990. Integrated circuits are somewhat difficult to obtain today.

Small radio ZN414 (CB22173E)
This MW bedside radio was found in an English documentation from 1989. It is based on a dedicated...
Voltmeter or DC Ammeter with the CA3140 (CB12312E)
This circuit is from 1993 documentation. The table shows the component values for voltage...
Solenoid Driver (CB5184E)
This low current solenoid driver was found in an ancient American documentation. The solenoid must be...