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## ADC eliminating noise for improved accuracy

I am working on a 24 bit ADC and would like to eliminate noise as much as possible in order to maximize the performance of the 24 bit ADC. There are two main areas where I am concerned where noise can come from: Internal noise where the noise from the circuit itself. External noises where […]

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## Is there application note or white paper with an in-depth explanation or best practices for how to size PCB bed of nails test points?

Ideally a reference for small boards: The board that will be tested is 10 x 20 mm, and it’s crowded. It doesn’t have a lot of real estate left for test pads. I need to expose six signals to the bed-of-nails. Power, ground, and four digital signals, to be able to change firmware after the […]

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## Digital Control of Analog Gauge

I would like to digitally control an analog VDO water temperature gauge. These are three terminal devices, with +12v power, ground, and sensor input. The sensor provides variable resistance using a thermistor. For example: https://www.vdo-gauges.com/cockpit-250-deg-f-water-temperature-gauge-use-with-vdo-sender.html I don’t know specific values, but for the purpose of argument, imagine that the sender range is 200 to 0 […]

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## Trying to find a spec sheet on an old Toko active filter

I’m trying to find the pin-out of an old low-pass filter I have. I must have lost my docs for it decades ago. I’ve tried googling, but didn’t turn up anything. It’s Toko part-number TK5429. I got it from DigiKey – probably in the 1990’s. The writing on the little bag says “THB type Filter […]

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## Trying to find a spec sheet on an old Toko active filter

I’m trying to find the pin-out of an old low-pass filter I have. I must have lost my docs for it decades ago. I’ve tried googling, but didn’t turn up anything. It’s Toko part-number TK5429. I got it from DigiKey – probably in the 1990’s. The writing on the little bag says “THB type Filter […]

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## 2 ground planes vs ground and power plane for 4-layer pcb with many power rails

I’m creating a 4-layer PCB design that takes a \$12\,\text{V}\$ DC input and converts it into 9 different voltages for various components on the PCB. I understand that a common stackup for 4-layer boards is signal, ground, power, signal. But, given the number of different voltages I have I’m not really sure how to break […]

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## Turning on an automotive relay when enough voltage is avaialble

I’m trying to drive a relay off a dome light in a car, where the dome light fades in smoothly. That is, say, I have a constant ground and the other wire goes from 0 to 12V (up to 14V) over a couple seconds. The dimmer is being run by the car’s computer. While the […]

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## Anything i try i keep getting this error any help would be great. A column-vector y was passed when a 1d array was expected

Anything i try i keep getting this error any help would be great. A column-vector y was passed when a 1d array was expected. Need help can’t seem to resolve this? dataset = pd.read_csv(r”C:\Users\tb180\Desktop\Dataset for bowling.csv”) X = dataset[[‘Opponent’,’Ground’,’Economy Rate’,’Wickets’,’Innings’]] Y = dataset.iloc[:,10].values.reshape(-1,1) #Training and Testing X_train, X_test, Y_train, Y_test = train_test_split(X,Y, test_size=0.20, random_state=42) dataset.fillna(0, […]

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## Testing types of Prolog terms: slight problems

Here is some code to test the type/metatype of SWI-Prolog terms: % var,nonvar are meta-question about the state of computation, not about the term % Note: X can be a variable (if it is fresh) or a nonvar (if it is set) % but x can ever only be a nonvar typeof(X, var) :- var(X),!. […]

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## How to show the prediction values while the neural-network training is on going

I am training a model to classify the video clips out of the two labels, while the model loss keep the same, so I am wondering the prediction values when traning is going on, I do some trying, then comes the error: Cannot assign a device for operation ‘replica_1_5/model_12/activation_7/Softmax’: Could not satisfy explicit device specification […]