ChongMing Group (HK) Int'l Co., Ltd
| Payment Terms | T/T, Western Union,Paypal |
| Supply Ability | 20000 |
| Delivery Time | 1 |
| Packaging Details | please contact me for details |
| Description | Motor Driver Bipolar On/Off 14-PDIP |
| Features | ·With TO-220AB package |
| Features2 | ·Glass passivated, sensitive gate triacs in a plastic envelope |
| Features3 | intended for use in general purpose bidirectional switching and phase control applications, where high sensitivity is required in all four quadrants. |
| Features4 | Repetitive peak off-state voltage 600 V |
| Features5 | Repetitive peak off-state voltage 600 V |
| Brand Name | ATMEL |
| Model Number | U209B |
| Certification | Original Factory Pack |
| Place of Origin | Philippines |
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Product Specification
| Payment Terms | T/T, Western Union,Paypal | Supply Ability | 20000 |
| Delivery Time | 1 | Packaging Details | please contact me for details |
| Description | Motor Driver Bipolar On/Off 14-PDIP | Features | ·With TO-220AB package |
| Features2 | ·Glass passivated, sensitive gate triacs in a plastic envelope | Features3 | intended for use in general purpose bidirectional switching and phase control applications, where high sensitivity is required in all four quadrants. |
| Features4 | Repetitive peak off-state voltage 600 V | Features5 | Repetitive peak off-state voltage 600 V |
| Brand Name | ATMEL | Model Number | U209B |
| Certification | Original Factory Pack | Place of Origin | Philippines |
| High Light | electronic chip board ，electronic components ic | ||
Power Circuit Board Chips U209B Monolithic Integrated Control Circuitboard
Monolithic Integrated Feature Phone Circuit
Description
The µc controlled telephone circuit U4090B is a linear integrated circuit for use in feature phones, answering machines and fax machines. It contains the speech circuit, tone ringer interface with dc/dc converter, sidetone equivalent and ear protection rectifiers. The circuit is line powered and contains all components necessary for amplification of signals and adaptation to the line. An integrated voice switch with loudspeaker amplifier allows loudhearing or handsfree operation. With an anti-feedback function, acoustical feedback during loudhearing can be reduced significantly. The generated supply voltage is suitable for a wide range of peripheral circuits.
Features
DC characteristic adjustable
Transmit and receive gain adjustable
Symmetrical input of microphone amplifier
Anti-clipping in transmit direction
Automatic line loss compensation
Symmetrical output of earpiece amplifier
Built-in ear protection
DTMF and MUTE input
Adjustable sidetone suppression independent of sending and receiving amplification
Speech circuit with two sidetone networks
Built-in line detection circuit Integrated amplifier for loudhearing operation
Anti-clipping for loudspeaker amplifier Improved acoustical feedback suppression
Power down
Benefits
Savings of one piezo electric transducer
Complete system integration of analog signal processing on one chip
Very few external components
Applications
DC line interface and supply voltage generation
The DC line interface consists of an electronic inductance and a dual port output stage, which charges the capacitors at VMPS and VB. The value of the equivalent inductance is given by L = RSENSE CIND (RDC R30) / (RDC + R30)In order to improve the supply during worst case operating conditions two PNP current sources - IBOPT and IMPSOPT - hand an extra amount of current to the supply voltages, when the NPNs in parallel are unable to conduct current.
A flowchart for the control of the current sources (figure 5) shows, how a priority for supply VMPS is achieved.
Company Details
Business Type:
Distributor/Wholesaler
Year Established:
2008
Total Annual:
5000000-7000000
Employee Number:
80~100
Ecer Certification：
Active Member
CHONGMING GROUP (HK) INT'L CO., LTD. located in Hong Kong and Shenzhen. We are an independent Distributor of Electronic Components,established in 2008. AS a growing fast company, CM GROUP is renowned for its world-class efficiency, excellent services, and extraordinary ability to supply electron... CHONGMING GROUP (HK) INT'L CO., LTD. located in Hong Kong and Shenzhen. We are an independent Distributor of Electronic Components,established in 2008. AS a growing fast company, CM GROUP is renowned for its world-class efficiency, excellent services, and extraordinary ability to supply electron...
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