The two circuits are from Motorola's Linear Databook from 1990. The resistors depend on the gain of the transistor, having typical values between 1k and 10k. The load depends on the transistor used.

The two circuits are from Motorola's Linear Databook from 1990. The resistors depend on the gain of the transistor, having typical values between 1k and 10k. The load depends on the transistor used.