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參數(shù)資料
| 型號： | SN55108B |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Dual Line Receivers(雙線接收器) |
| 中文描述： | 雙線路接收器（雙線接收器） |
| 文件頁數(shù)： | 17/19頁 |
| 文件大?。?/td> | 435K |
| 代理商： | SN55108B |
SN55107A, SN55107B, SN55108A, SN55108B
SN75107A, SN75107B, SN75108A, SN75108B
DUAL LINE RECEIVERS
SLLS069B – JANUARY 1977 – MAY 1995
2–17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
temperature controller with zero-voltage switching
The circuit in Figure 22 switches an electric-resistive heater on or off by providing negative-going pulses to the
gate of a triac during the time interval when the line voltage is passing through zero. The pulse generator is the
2N5447 and four diodes. This portion of the circuit provides negative-going pulses during the short time
(approximately 100
μ
s) when the line voltage is near zero. These pulses are fed to the inverting input of one
channel of the ’108A. If the room temperature is below the desired level, the resistance of the thermistor is high
and the noninverting input of channel 2 is above the reference level determined by the thermostat setting. This
provides a high-level output from channel 2. This output is ANDed with the positive-going pulses from the output
of channel 1, which are reinverted in the 2N5449.
Heater
Load
2B
120 V to
220 V, 60 Hz
5-V
Zener
– T
Thermostat
Setting
GND
Channel 1
Channel 2
2A
10-V
Zener
250
μ
F
+
2N5449
2N5447
250
μ
F
‘108A
VCC +
1A
1B
VCC –
+
Figure 22. Zero-Voltage Switching Temperature Controller
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SN55110 | DUAL LINE DRIVERS |
| SN55110AFK | DUAL LINE DRIVERS |
| SN55110AW | DUAL LINE DRIVERS |
| SN55113FK | DUAL DIFFERENTIAL LINE DRIVERS |
| SN55113W | DUAL DIFFERENTIAL LINE DRIVERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN55109A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL LINE DRIVERS |
| SN55109AFK | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL LINE DRIVERS |
| SN55109AJ | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL LINE DRIVERS |
| SN55109AW | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL LINE DRIVERS |
| SN55110 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL LINE DRIVERS |
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