Posted on Jun 29, 2012

The proliferation of industrial and computerized equipment containing programmable memory has increased the need for reliable recording media. The magnetic tape medium is presently one of the most widely used methods. The primary component of any magnetic recording mechanism is the write mechanism. The concept of the write generator is very basic. The digital input causes both a change in the output amplitude, as well as a change in frequency.

Click here to download the full size of the above Circuit.

This type of operation is accomplished by altering the value of a resistor in the standard twin-tee oscillator. A HI-201 analog switch was used to facilitate the switching action. The effect of the external components on the feedback network requires R6A and R6B to be much smaller than would normally have been expected when using the twin-tee feedback scheme.

Leave Comment

characters left:

New Circuits



Popular Circuits

EAGLE PCB Layout Editor
frequency counter
Digital Automatic Level Control (Alc) Circuit
The Digital Sketchbook Arduino Frequency Measurement Library
two stage fm transmitter bug more tank circuits
simple steps for making fm transmitter
tune coil
usb power socket with indicator
Automatic Night Lamp Circuit PCB
Beeper & Buzzer Schematics
Improved vacuum tube models for SPICE
USB 8bit Interface Board
Single flashing light string circuit 1
XTR112 114 without external transistor circuit diagram