Shopping cart is empty
 
English Polski Spanish 
Search For a Manual
 

(e.g. AA-V20EG JVC, ZX-7 Sony )
PayPal 1000+ rating Secure, Encrypted Checkout.
 
Who's Online
There currently are 446 guests online.
Categories
Information
Featured Product
Home >> HEWLETT PACKARD (HP) >> 140A Owner's Manual
 
 0 item(s) in your cart 

HEWLETT PACKARD (HP) 140A
Owner's Manual


Tweet about this product and get $1.00 of store credit for instant use!
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of HEWLETT PACKARD (HP) 140A Owner's Manual

Complete owner's manual in digital format. The manual will be available for download as PDF file after You purchase it.

Owner's Manual ( sometimes referred to as User's Guide or User's Manual ) contains information on how to use Your device. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

Not yet ready
You must purchase it first

Customer Reviews
There are currently no product reviews.
Other Reviews
 AV-D37 AIWA Owner's Manual by ALEXANDRE Jean Louis;
Très satisfait ! envoi rapide, Grand catalogue disponible. Many thanks !
 YACHT BOY 230 GRUNDIG Owner's Manual by Joseph McOscar;
Delivery came quite promptly and in a very readable format. Thank you.
 VRX8370R CLARION Owner's Manual by Leonardo Russo;
I found my Clarion VRX8370R in the Camper I bought and I wasn't able for month to understand it. The Owner Manual was perfect and just what I was searching for. Thank you. Leonardo
 NSXV2100 AIWA Owner's Manual by peter scott;
Very good copy of Manual, clear and easy to print off, arrived very promptly and reasonably priced. Thanks, I will use you again.
 DC942 PHILIPS Owner's Manual by Johan Vanmullem;
Zeer duidelijke afdrukken op A4-formaat , zeer uitgebreide handleiding . Pluspunt ,zeer snelle respons van jullie , binnen de 24h . Top !!!

Text excerpt from page 16 (click to view)
Model 140A

Section IV Paragraphs 4-18 to 4-25

t RECTIFIER
DOUBLER

4

HIGH VOLTAGE

TRANSFORMER

I
-RECTIFIER V304

I
REGULATOR v301I0301

1-1

w
i

Figure 4-3. High-Voltage Power Supply Block Diagram

the transistor is off. Brea :downdiode CR202 reduces the output impedance, and provides temperature compensation for the circuit. Voltage divider R207/ R208 reduces the 10-volt output to 1 volt. Both 10volt and 1-volt outputs a r e available on the front panel of the Model 140A.
4-18. HIGH-VOLTAGE POWER SUPPLY.

4-19. Figure 4-3 is a block diagram of the high voltage power supply. The output of a regulated transistor oscillator is stepped up in voltage and applied to a s e r i e s of high-voltage rectifiers. The positive output of the voltage doubler is connected to the post-accelerator of the CRT. The negative outof the CRT put voltages a r e used in the gun assembly and its associated controls. The Z - A X I S INPUT can be used to apply an intensity modulating signal to the cathode of the CRT. 4-20. Figure 5-8 is schematic diagram of the highvoltage power supply, including the CRT. Oscillator Q302 operates at a frequency of about 32 kc. Any change in the output voltage is applied to the grid of V301, which converts the voltage change to a current change. This current change is applied by emitter follower Q301 to the base of the oscillator transistor. The amplitude of oscillations is changed in such direction a s to oppose the original output voltage change. High Voltage Adjust R319 s e t s the amplitude of oscillation to produce the correct output voltage.

4-22. Two separate negative supr ies a r e usel , one for the control grid o f t h e CRT,- and one to provide CRT cathode and focusing voltages. Both supplies use half-wave rectifiers (V304 and V305). The unblanking gate from the horizontal plug-ins (via pin 1, J 2 ) is applied to the return side of the grid supply, and changes the negative grid voltage by about +50 volts to unblank the trace. A positive pulse of about 20 volts will blank the trace when applied to Z-AXIS INPUT. When Z-AXIS INPUT is not used, S301 is set to INT to receive chopped blanking from a dualtrace plug-in. 4-22. The voltage doubler circuit (V302/V303) provides the 5-kc post-accelerating voltage required by the CRT. 4-23. The ASTIGMATISM adjustment (R341) affects the roundness of the spot, and the Geometry adjustment (R343) is used to optimize pattern shape.

a

4-24. TRACE ALIGN.

4-25. Trace-aligning coil L302 is located around the CRT near its screen. Adjustment of Trace Align R350A/B varies the magnitude and direction of current through the coil, which has the effect of rotating the trace. In this way the trace is brought into alignment with the CRT graticule.

01638- 1

4-3

You might also want to buy

$4.99

140A HEWLETT PACKARD (HP)
Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagr…
>
Parse Time: 0.209 - Number of Queries: 114 - Query Time: 0.042