.. a portable water-leak detector that uses a common 9 V battery for power (Figure 1). The circuit consumes less than 10 uA during detection mode, and a 9 V alkaline battery has greater-than-500-mAhr capacitance. So one battery can last ...
.. produces lowpass and bandpass responses, and the addition of a fourth op amp produces a highpass response. Removing R 10 and adjusting various component values produce a notch or bandstop response or an allpass response. Materials on the ...
.. The asterisked resistors are 1% or better and R S = 1.25 Ω. The 5-Vpp PWM input has a frequency (F PWM ) assumed to be 10 kHz or thereabouts. If it doesn’t, scale C 1 appropriately with: The resulting PWM switching of Q 2 creates a ...
.. you should choose the part-number option according to your application. The maximum data rate (determined by Q1) exceeds 10 kbps. Materials on the topic Datasheet Fairchild FDN359AN Datasheet Fairchild FDS6679 Datasheet Fairchild QSE113 ...
.. The crystal clock’s supply is powered with 5 V from the REF195. The clock’s output will swing between 5 and 10 V with respect to ground. The level-shifted clock is applied to the comparator’s inverting terminal. The ...
.. out that Figure 3 will work. Figure 3. Do something useful with the other 2/3rds of U1, eliminate Q1 for loads of less than 10 mA, and gain short-circuit protection for free. R ON for the 4069 is V+ dependent but can range as low as 200 Ω ...
.. resistor with 1.0 V V GS threshold. It is fully on when the input is below 4.2 V. When the input is greater than 4.2 V, pin 10 of the boost converter needs to rise above the input voltage. Therefore, the voltage divider of R 5 and R 6 begins to ...
.. increase distortion. Also, be aware that there is a small DC offset when the circuit is on (muting), but at less than 10 mV it can be ignored for the most part, provided the following circuitry is not DC coupled. At worst, it may cause a ...
.. notch filter. To simulate practical variances from the ideal, capacitor values were randomly selected to be within 1% of 10 nF, and R1 and R2 to be within 0.1% of ideal values for a 2400-Hz F OSC . A value of R3 that produced a 130 dB notch ...
.. possible where: as D = 0 to 1. Figure 2. Simple circuit for regulator programming with PWM where V OUT ranges from 0.8 V to 10 V as the duty factor (D) goes from 0 to 1. All that’s required to add PWM control to Figure 1 is to split R 2 ...