Found in an ancient American documentation, this circuit can generate signals up to 40 MHz for a Z80, microcontroller widely used at the time. The circuit must be powered with 5 V and also serves as a shield.
Combining an Ultra-Low Power MCU with an 802.15.4 Radio, the SAM R30 Enables Long-Lasting Battery...
The circuit shown is from the 1993 Motorola Linear Interface ICs. The power source may be common...
We can obtain the characteristics of an operational amplifier with FET by adding FETs common to the...