Agilent 1952-12 free download

File name 1952-12.pdf

HEWLETT' PACKARD JOURNAL T E C H N I C A L I N F O R M A T I O N F R O M T H E - h p - L A B O R A T O R I E S VOL. 4 No. 4 PUBLISHED BY THE HEWLETT-PACKARD COMPANY, 395 PAGE MILL ROAD, PALO ALTO, CALIFORNIA DECEMBER, 1952 Those New -hp- Oscillators Much interest has been shown in the two MODEL 200AB new -hp- audio oscillators that have been ex The oscillator at the left in Fig. 1 is the hibited at recent trade shows. These new new -hp- Model 200AB. It replaces the older oscillators represent a substantial increase in Models 200A and 200B which have been dis the versatility of instruments that have always continued. The frequency range of the new been noted for versatility. For example, the 200AB is 20 cps to 40 kc. This contrasts with frequency range of a range for the former 200A of 35 cps to 35 SEE ALSO: "Higher Power Measure the two new oscilla kc and for the former 200B of 20 cps to 20 kc. ments With The 10 Kmc Test Set" Back page tors is such that they The 200AB delivers a maximum of at least replace four of the 24.5 volts across loads of 600 or more ohms. older oscillators. This has been accomplished This output corresponds to a maximum avail without increase in price. able power of 1 watt into the minimum rated Besides increasing the frequency range of load of 600 ohms. Loads significantly lower the oscillators, advances have been made in in value than rated minimum will usually other phases of their electrical design. Also, result in increased distortion in the output. the cabinetry of the oscillators has been re One of the most popular features of -bp- designed. The cabinet width has been reduced oscillators is the quality of electrical per to save bench space, while the appearance formance. In the new oscillators, performance has been designed to be more pleasing and has been improved in almost every respect. to aid in operation. Data typical of the new 200AB are indicated