Values of the frequency tuning resistors (application/pdf, 45Kb, 17 Mar 2011)

The first to sixth operational amplifiers (151-156) are connected to first to sixth gain setting resistors (161-166).

Typical accuracies are in the order of ±5%, but this can be improved for each of the four ranges by means of some fine-tuning resistors.

A control circuit controls variable or switchable capacitors or inductors.

Laser tuning of the parallel resistors (R1, R2, R3) provides automatic compensation.

The temperature controller module comprises a resistor network and at least one analog controller device.

Values of the frequency tuning resistors (application/pdf, 45Kb, 17 Mar 2011)

One controls a set of parallel connected resistors for fine output voltage steps.

The first to sixth operational amplifiers (151-156) are connected to first to sixth gain setting resistors (161-166).

The gain adjusting circuit (21) includes three resistors Ra, Rb, Rc, switches SW1 to SW6, and inverters INV1, INV2.

The resistor ladder includes adjustable tap resistors distributed along the resistor ladder.

A series-resistor setting unit (310) is disposed between a memory cell array (70) and an electric pulse applying device (50).

This makes it possible to eliminate semi-fixed resistors, to increase reliability after adjustment, to simplify adjustment, and to reduce the time required for adjustment.

The frequency setting circuit is used for adjusting the frequency of an MOS tube drive signal by changing at least one resistance value of the resistors.

not more than 3 variable and 4 fixed resistors