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Hi, The ckt as as draw as attached, is a auto/manual control panel board for pump-motor and trying to configure to run with MCU control auto operation and manual (with start/stop button in board). With the panel here i have included 2 nos relay: relay-1, NO, parallel connected to START BUTTON and relay-2, NC, series connected with STOP (...)
Hi, I have designed a temp controller. The temp from the sensor is measured and amplified. I have an relay in my circuit. The relay is connected with the Analog port, but in different pin. Whenever the relay gets turned on the ADC value gets increased. The voltage reference is same at all instance. The chip i have used : (...)
Hello i am using the two stages amplifier shown bellow into the transimpedance feedback system shown bellow. if the system shown bellow i have miiler capacitor and feedback ressistor how do i break them into the system shown in the end? Thanks. 157371 157372
Hey guys, Please see the sketch of my circuit here. 157367 I want to do loop-gain analysis (a.k.a. loop stability analysis) for the top loop. In simulation I simply put a voltage source (i.e. VLG) in part of the feedback and run the LG analysis (ie. AC loop gain). My questi
Hi guys, I'm trying to design a transimpedance amplifier for optical receiver, based on this acrticle: the requirements: -VDDA=1.8V -Cload = 200fF (the output of the amp loaded by 200fF) -the total gain At=Vout/Ipd = 3000, (Ipd is the current source on the left on the schematic) -BW>2
Hi All, I would like to do a project with many op amp. I want to do it to educate myself, I need a project that challenge me a bit but something achievable for someone with intermediate experience. Does anyone have an interesting idea?. Thanks in advance, Winsu
if you use darlington connected xtors (bjt's) to turn on the relay, emitter gnded, then you can have 4u7 on the base to gnd and 220k drive resistor to the base which will give you a delay, reverse schottky diode to speed up turn off ...
"MOSFET based switch" might refer to a solid state relays circuit rather than a bare MOSFET. In any case, you should specify voltage and current rating, in case of a relays circuit also control voltage, isolation and speed rating.
Hi, I'm using a TPS54528 voltage regulator to get an 1.05V output, the input is 5V. However once I apply some load (eg. 1.5 Ampere) I get a 16khz spike on VIN (the closer I go to the chip pin the bigger the spike will be). So since it's 16khz it will result in a high noise, and since some other regulators are also attached to the 5V rail the
Hi friends, I am using the C8051F340 controller's trigger signal to run the dc motor. This micro controller get the sensor signal to trigger the dc motor. It runs as per the program duration for 16 seconds. After that it should give the another signal to stop the motor. Whenever sensor get closed, Dc motor gets triggered signal from the micro co
I have a cooktop which SMPS is bad. It should produce 24VDC but it only does 16V. Here is a schematic with a very similar topology. It works with a TOP254GN IC. For first I tried to change 3 main components as all other parts looks fine and as these 3 tend to fail on this panel as I read on forums: - D6 Diode (original SMD mark: T4X5) -> r
Hi friends, I am using the C8051F340 controller's trigger signal to run the dc motor. This micro controller get the sensor signal to trigger the dc motor. It runs as per the program duration for 16 seconds. After that it should give the another signal to stop the motor. Whenever sensor get closed, Dc motor gets triggered signal from the micro c
I would like some help figuring out this linear regulator. 157235 I'd like to break it down into the three main parts as I see it. I understand that there's a pass transistor Q3. D1 and C1 form to create a reference voltage. I understand that Q4 forms some type of current limiter but I am unsure how it works. p
Hi, in a trio 9r-59d I experience a weird problem. On band B (1.6-4.8MHz) when I tune the dial below 2.5MHz or so, the receiver stops receiving anything, even noise. It seems to me that the local oscillator stops working at all below 2.5MHz on this band, cause even noise disappears. It seems to me that when I set the band spread or main tuning capa
Hi, I have a question regarding differential negative feedback circuit, addressed in Design of analog CMOS integrated circuits written by Razavi. On page 314 (Figure 9.30 (b)), Each output of an fully differential amplifier is shorted to the input of the amplifier to address the need for CMFB(Common mode feedback). (Resistor load is use
Hello, attached the picture of the fully differential closed loop feedback, which one of the configuration should be the standard one ? many authors refer to config 1 and mostly to config 2, while the first circuit provides inverting differerntial output to the input and the latter is non-inverting, 157117
Hi i am get the following short circuit protection circuit from the website it is working fine .The problem is when the 12v supply is on it is started from NC operation after pressing the push button only the output will come and if it is short circuit at the output the relay get turn off and it is change to NC.I want to modified this circuit as fi
Hello, I am simulating the slew rate of fully differential OTA. I have a problem with making buffer using resistive network, first I can't choose small value of R because this will kill the gain of the OTA, secondly if I use a big resistors it creates in conjunction with the input MOSFET a pole at low frequency that disturb the stability of my a
Hello I Have designed a Voltage amplifier ,i Have a high impedance on the input and low impedance on the out put. amplifier plot and its Gain responce shown bellow. if the schematics bellow there is a transimpednce amplifier design. How make our built amplifer to sense current?(as shown in the plt bellow? Thanks 156992
How is clk_dcc generated from the following phase detect circuitry