Flash memory programming power source (CB9322E)

This circuit was found in Maxim's documentation from the 90's. The circuit provides 12 V x 120 mA.

One Transistor High Power Switch (CB990E)
This circuit can handle 25 A unde a 32 V voltage using a hight power old transistor. This...
Outlet test (CB7952E)
Found in a PE Hobbyst Handbook, this circuit checks if there is voltage in a power outlet by...
Receiver monitor (CB8632E)
This circuit was found in a 90s Hands-On Electronics. When a signal appears at the headphone...