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  1. R

    CMOS

    What is the differences between the static power dissipation and the switching power dissipation in a CMOS inverter and what parameters that affact the switching power dissipation?
  2. R

    amplify the power (infrared)

    I would like to use this circuit to transmit the audio signal.
  3. R

    KA2184

    i would like to find the datasheet please help me~~~
  4. R

    Audio amplifier

    Any audio amplifier (Mono)  circuit can drive a earphone?  The impedance of the earphone is about 16ohm. Thank you.
  5. R

    9V power source

    My project is infrared headphone.  I would like to supply 9V for my circuit but I do not like to use 9V battery (1.5Vx6).  Any suggestion about it. Thx~~~
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    infrared transmittion

    I want to use the IR diode to transmit the modulation signal to the receiver.  I constructed this circuit and connect two IR Diode on the output(Vmod).    I tested the IR diode using CRO, there has the modulation signal.  But the receiver can not receive the signal.  Is this circuit has any...
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    About analog Multiplier

    Hello everybody, I want to make a analog multiplier to multiply two audio signals.
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    Mixer

    hello~~~ I would like to multiply the carrier and  the audio signal.  And I want to design the mixer to multiplier these two signal.  What can I do?? can I use the summing amplifier???
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    Infrared Transmission

    hello everybody~~~ I would like to design the circuit.
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