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ชุดถอดรหัส
DTMF
Touch-Tone
Decoder
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Here's the Answer for
your DTMF Control Problems!
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เป็นวงจรถอดรหัสจากฐานสองเป็นฐานสิบ
DTMF จากโทรศัพท์ telephone, radio,และอื่นๆ
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มีวงจรสวิทย์สามารถขับ
relay ที่ 20mA output LED's, digital devices, อื่นๆ
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วงจรทำงานมีเสถียรภาพด้วยแร่คริสตอล decoder with stable crystal
control
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สามารถถอดรหัสได้ตั้งแต่ 1-
9, *, #, A, B, C, D
You can strap the TT-7 for detection of
any single digit, including the secondary A,B,C,D digits. When the decoder
detects the selected digit, it will provide a closure to ground for driving
a relay, lamp, sounder, or other such load of up to 20 mA. A commercial
central office quality decoder IC chip is used, making the TT-7 extremely
reliable, fast and sensitive. You may connect the TT-7 directly across
the speaker or detector output on any receiver, and in fact, we even detail
how it may be connected directly to a telephone line. We designed the TT-7
to be small enough (about 2 square inches) to fit in many radios for easy
installation. If your needs are simply single function remote tone control,Runs
on 5VDC. Size: 1 1/2 x 7/8 x 2 1/4.
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