HEATHKIT IG-5218 PDF

This is the 20 pages manual for Heathkit IG Manual. Read or download the pdf below. If you want to contribute, please mail your pdfs to info audioservicemanuals. Connect the external voltmeter common lead to the black sine wave output binding post. Connect the other voltmeter lead to the red sine wave output binding post. NOTE: During the following adjustments the panel meter pointer may seem to vary errati— cally.

Author:Takus Zulura
Country:Botswana
Language:English (Spanish)
Genre:History
Published (Last):16 August 2013
Pages:88
PDF File Size:12.30 Mb
ePub File Size:17.98 Mb
ISBN:945-3-76073-295-8
Downloads:71947
Price:Free* [*Free Regsitration Required]
Uploader:Zulkikora



This is the 20 pages manual for Heathkit IG Manual. Read or download the pdf below. If you want to contribute, please mail your pdfs to info audioservicemanuals. Connect the external voltmeter common lead to the black sine wave output binding post. Connect the other voltmeter lead to the red sine wave output binding post. NOTE: During the following adjustments the panel meter pointer may seem to vary errati— cally. This is normal. If you encounter difficul— ties, make the control adjustments in small increments and allow the instrument time to stabilize after each adjustment.

NOTE: In the following two steps, if no change can be detected in the panel meter reading, it will not be necessary to readjust the feedback control. Leave the switch in the position where the panel meter indi- cates the lowest voltage. Leave the switch in the position where the panel meter indi— cates the lowest voltage.

This completes the adjustments of the Audio Generator. Turn off the power and remove the AC plug from the socket. Proceed withthe Final Assembly on Page NOTE: The following controls are located on the wave generator circuit board.

Refer to Figure 1 fold—out from Page 36 for their loca— tion. Position each control at its center of ro- tation. Each of these Sections will be described separately. The sine wave oscillator circuits consists of differential amplifier transistors Q1 and Q2; voltage amplifier transistor Q3 ; power amplifier transistors Q4 and Q5; and the positive and negative feedback loops.

Positive regenerative feedback comes from the common emitter output of transistors Q4 and Q5, and is coupled to the base of transistor Q2 through the lamp L1, the arm of feedback control R7, and resistor R6. Negative degenerative feedback comes through the notch filter and is directly coupled to the base of transistor Q1. Oscillation occurs due to the positive feedback. Without negative feedback, the circuit would oscillate at some indeterminate frequency; how- ever, the notch filter, which passes all fre— quencies except the one to which it is tuned, provides the negative feedback to the base of transistor Q1.

This negative feedback prevents oscillation at all frequencies except the one that is not passed, permitting the system to oscil- late at only the selected frequency,. The tuned frequency of the RC notch filter circuit may be calculated by the general formula:. How- ever, since this notch filter is a specialized RC network in which there are two resistances and two capacitances, the formula for this network then becomes:. Previous Next.

Download PDF. Page 4 Page 42 Plug the line cord into an. AC outlet. Set the external voltmeter to read 10 volts AC. Disconnect the external voltmeter. Adjust the BIAS control until you obtain a maximum panel meter reading. How- ever, since this notch filter is a specialized RC network in which there are two resistances and two capacitances, the formula for this network then becomes: 1 m Rlechlc. F:

GEMSTAR PUMP ERROR CODES FILETYPE PDF

S120222 Heathkit Sine-square Audio Generator Ig-5218

International shipments require extra fees. See Terms and Shipping Policies for more details. Many voices, one kit. Lots of articles have suggested improvents to the Heathkit IG But until now, no one offered a complete kit to make these modifications easy for the DIY'er. We have incorporated the best of those published ideas and now offer a complete new kit to help you upgrade your Heathkit IG Highly compatible.

C8550 TRANSISTOR DATASHEET PDF

Heathkit IG 5218 Manual

.

AP CEEP COUNSELLING DATES 2012 PDF

.

Related Articles