Difference between revisions of "M-222"

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==Overview==
 
==Overview==
Converter M-222 is designed to supply emergency ringing current for telephone switchboards from two Signal Corps Batteries BA-23 in series, as a source of power. Converter M-222 is supplied without the batteries, which must be installed as described in paragraph 6, Battery Installation. The output voltage is 100 volts a.c. open circuit; 50 volts a.c. with a 5-watt load. The peak voltage does not exceed 250 volts a.c. The frequency of the output voltage is 24 cycles -I- 4 cycles.
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Application
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Converter M- 222 is designed to supply emergency power ringing current for telephone switchboards such as Switchboards BD-91-( ) and BD-96, when power from a 110-volt, 60 cycle source is not available or when the standard 110-volt power ringing equipment fails in service. Converter M- 222 is a component of Telephone Central Office Sets TC- 4 and TC-12.  
  
[[File:M-222 8751780191 l.jpg|400px]]
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==Technical Characteristics==
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===Power Source===
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Converter M-222 uses two 1 1/2-volt Batteries BA-23, connected in series, as a source of power. Battery life is approximately 8 to 10 hours under continuous operation.
  
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===Output Voltage and Frequency===
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The output of Converter M-222 is 100 volts alternating current open circuit, or 50 volts with a 5-watt load. The peak voltage will not exceed 250 volts. The frequency of the output voltage is 24 cycles ± 4 cycles.
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===Description===
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Converter M-222 consists essentially of the following assemblies:  Box. Converter M-222 is housed in a rectangular steel box with two removable sides. On the front panel are mounted an output receptacle, a nameplate, the lower section of one catch fastener, and Switch SW- 105. The switch is mounted in a recess in the panel. The ON and OFF positions of the switch are marked on the panel.
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[[File:M-222_7.png|400px|center]]
  
 
==Images==
 
==Images==
 
<gallery widths=100px heights=100px perrow=5>
 
<gallery widths=100px heights=100px perrow=5>
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File:M-222 8751780191 l.jpg
 
File:M-222_1.png
 
File:M-222_1.png
 
File:M-222_2.png
 
File:M-222_2.png

Latest revision as of 12:50, 20 September 2013

Overview

Application Converter M- 222 is designed to supply emergency power ringing current for telephone switchboards such as Switchboards BD-91-( ) and BD-96, when power from a 110-volt, 60 cycle source is not available or when the standard 110-volt power ringing equipment fails in service. Converter M- 222 is a component of Telephone Central Office Sets TC- 4 and TC-12.

Technical Characteristics

Power Source

Converter M-222 uses two 1 1/2-volt Batteries BA-23, connected in series, as a source of power. Battery life is approximately 8 to 10 hours under continuous operation.

Output Voltage and Frequency

The output of Converter M-222 is 100 volts alternating current open circuit, or 50 volts with a 5-watt load. The peak voltage will not exceed 250 volts. The frequency of the output voltage is 24 cycles ± 4 cycles.

Description

Converter M-222 consists essentially of the following assemblies: Box. Converter M-222 is housed in a rectangular steel box with two removable sides. On the front panel are mounted an output receptacle, a nameplate, the lower section of one catch fastener, and Switch SW- 105. The switch is mounted in a recess in the panel. The ON and OFF positions of the switch are marked on the panel.

M-222 7.png

Images

Related Files

Adobe PDF icon.png TM 11-344 (1943)

Technical Manual
Converter
M-222
March 16, 1943


Adobe PDF icon.png TM 11-344 (1946)

Technical Manual
Converter
M-222
April 1946