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OPTICAL RFID TEST CIRCUIT (87) (opiddemo)
I designed this test the concept of using light
techniques to send identification data instead of RF.
A more detailed discussion on this scheme can be
found in the Imagine red new products section. |
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CMOS INVERTER 125KHz LC OSCILLATOR (116)
(125kpowerosc4)
This circuit uses a single CMOS inverter to form a
series resonant LD oscillator. The values shown
set the oscillation at about 125KHz but other
frequencies are possible by changing the main LC
values |
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CMOS INVERTERS FORM 125KHZ OSCILLATOR (117)
(125kpowerosc3)
This circuit is similar to schematic number 116 but
inverts the LC components so the inductor is
grounded. Two inverters are needed to produce the
needed oscillation. Again, the values shown set the
frequency at 125KHz but can be changed to produce
other frequencies. |
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CMOS NAND GATE FORMS GATED 125KHZ OSCILLATOR
(118) (125kpowerosc5)
This circuit is similar to schematic number 116 but
uses a NAND gate as an inverter. The gate allows
the oscillator to be gated on and off. Again, the
values shown set the frequency at 125KHz but can be
changed to produce other frequencies. |
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MEDIUM POWER 125KHZ OSCILLATOR (119)
(125kpowerosc0)
This circuit is similar to number 117 but adds more
invertors in parallel to deliver more power. The
values shown are for 125KHz. |
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MEDIUM POWER 125KHZ OSCILLATOR (120)
(125kpowerosc2)
This circuit is similar to number 119 but adds even
more inverters in parallel to deliver yet more
power. The values shown are for 125KHz. |
