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Geekcreit® 100A 22000W Monitor de Potencia de Módulo AC Panel de Medidor 45-65Hz Voltaje de Prueba AC 80-260V
US$20.78 US$21.99

Q: When using for the first time,how do you know that it is calibrated?Can it be calibrated?

Preguntado por Vedamurthy sobre 2018-09-20 11:46:11

Hyenad No need calibration, it has been calibrated by professional instruments before leaving the factory.

2018-09-25 09:32:14 Servicial (0)
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Generador de señal ICL8038 Generador de onda sinusoidal / triangular / rectangular / de frecuencia media / baja de 10Hz-450KHz
US$9.23 US$9.99

Q: I need the circuit diagram for this board.

Preguntado por Vedamurthy sobre 2019-08-29 08:27:10

wujiahui http://myosuploads3.banggood.com/products/20190829/20190829202312icl8038.pdf This is the chip's data sheet, we can only provide these.

2019-08-29 08:24:09 Servicial (0)
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Vedamurthy 02/02/2019
I am happy with the delivery time.Look,feel and finish is good.However the PCB is thin and there is some degree of warping.Some of the component values are not nearly perfect.Soldering the USB socket and lengthy pin headers was a bit frustrating.User Manual provided is very useful.The kit booted without any problem after final assembly.Performed ok when tested with a Function generator.However as the frequency is increased ,the distortion and jitters also increase(especially for square waves).Also, under certain frequencies the parameters are not displayed.When i checked the JYEtech website for guidelines, found that the kit i recieved is a fake.For the last 3 days,the kit is performing ok.Hope it works forever.
Original JYE Tech DSO138 DIY Kit de Osciloscopio Digital SMD Soldado 13803K Versión
US$21.59 US$25.91
0
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Vedamurthy 02/02/2019
I am happy with the delivery time.Look,feel and finish is good.Very neat and compact module board.I would recommend atleast waveform symbol markingS on the P2 jumper and indicators on all the potentiometers.And since this is a Waveform generator,a paper manual is a must with detailed description.Moving onto the operation,found that the performance is not upto the mark.I can see the sine,triangle and square waveform when coupled to an oscilloscope.However the sine waveshape is not that perfect.The Sine linear pot has some control in shaping the waveform,but not as expected. All the waveforms are non symmetrical and non alternating.The maximum frequency that can be generated is close to 250Khz.Peak to peak voltage for Sine and triangle is very small(between 3 - 4 volts).For square wave it goes upto 11volts.Within few hours of testing(under specified voltage and current rating) the smd transistor G1 got damaged.I had to replace that with 2N5551(TO-92).Overall i am not satisfied with this Module.
Generador de señal ICL8038 Generador de onda sinusoidal / triangular / rectangular / de frecuencia media / baja de 10Hz-450KHz
US$9.23 US$9.99
0
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Vedamurthy 18/01/2019
I am happy with the delivery time.Look,feel and finish is good.Very compact and neat module board.i would recommend to have the Elect specs printed on the board.I feel the speed regulation is non proportional to the rotation of the Pot knob.
Controlador de velocidad PWM de motor de CC mini de 3V a 35V y 5A de 90W, regulador de velocidad ajustable de luz
US$3.99 US$8.99
0
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Vedamurthy 16/01/2019
I am happy with the delivery time.Look,feel and finish is good.Color is also attractive.Dimensions exactly match the claim.Tubing thickness is quite thin.Hope it serves well on the job.
2M Plano 9.5MM 18.5MM PVC Tubo Termoretráctil para 18650 18500 Batería
US$6.92 US$7.99
0
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Vedamurthy 16/01/2019
I am happy with the delivery time.Look,feel and finish is good.However the original dimensions measure 94mmX49mm(against the claim of 100mmX50mm).But i am impressed with the quality of copper tracks and neatly drilled/well positioned holes.Hope i dont face any problem soldering onto the copper tracks in future.
5pcs 5X10cm Prototipo de papel de cobre de un solo lado PCB Tablero de pruebas con 2-3-5 Agujero Conjunto
US$7.23 US$6.49
0
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Vedamurthy 16/01/2019
I am happy with the delivery time.Look,feel and finish is good.Plastic quality is ok.Hope the solder holds well onto the leads.
8 puntas universales de adaptador de corriente AC DC de 2 pines para probador de carga de energía
US$13.19 US$14.99
0
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Vedamurthy 16/01/2019
I am happy with the delivery time.Look,feel and finish is good.Well made out product.Dimensions exactly match the claim.Material quality seems to be good.Happy with this buy.
10 tipos de agujas de acero inoxidable PCB Circuito electrónico a través del agujero Aguja Desoldar Soldadura Reparación herramienta 80mm 0.7-1.3mm
US$1.05 US$1.72
0
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Vedamurthy 14/01/2019
I am happy with the delivery time.Look,feel and finish is very good.I am buying it for the second time.Hole Dimensions exactly match the claim.however outer dimensions(Diameter x Length) when measured are 13x24mm(against the claim of 14x25mm).But the overall finish and quality seems to be quite good.happy with this buy.
Acoplamiento de aleación de aluminio Acoplador de eje rojo con hexágono Llave y tornillos motor Acoplador Conector
US$9.23 US$9.99
0
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Vedamurthy 14/01/2019
I am happy with the delivery time.Look,feel and finish is very good.Dimensions exactly match the claim.Material quality seems to be good.For its size the bobbin feels quite strong.Very neatly finished product.
Bobinas de hilo máquina de coser de plástico transparente
US$0.45
0
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Vedamurthy 14/01/2019
I am happy with the delivery time.Look,feel and finish is good.Dimensions exactly match the claim.Material quality seems to be good.Hope it works out well during the actual etching process.
Placa de circuito impreso de fibra de vidrio de cobre de un solo lado de 70x100x1,5 mm
US$6.89 US$7.99
0
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Vedamurthy 14/01/2019
I am happy with the delivery time.Look,feel and finish is very good.End to end measured length is 149cm.The cable is actually encapsulated within a layer of what seems to be PVC.it has been neatly done.Hope its strength holds on to its aesthetic appearance.I am happy with this buy.
59 Inch Acero Alambre Cable de bucle de seguridad Scooter de bicicleta ligero U-Lock Cuerda 49 filamentos
US$5.99 US$7.99
0
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Controlador de velocidad PWM de motor de CC mini de 3V a 35V y 5A de 90W, regulador de velocidad ajustable de luz
US$3.99 US$8.99

Q: what is the Max current limit at 35volts?

Preguntado por Vedamurthy sobre 2019-01-09 07:56:16

wujiahui Output current: 0-5A,the Max current maybe 5A.

2019-01-10 07:55:59 Servicial (0)
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Vedamurthy 05/10/2018
Under normal test seems to function well.The menu parameters can be varied as listed under the manual.The NTK sensor seems sensitive to temperature changes complimented by the display.User friendly paper documentation is suggested.
Geekcreit® W1209 DC 12V -50 a +110 Interruptor de control del sensor de temperatura Termostato Termómetro
US$4.99 US$9.99
0
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Vedamurthy 05/10/2018
Seems to be ok.Have not tested it yet.Hope it works well.
100 unids 10 Valores 102 K-681 K 2 KV de Alto Voltaje Cerámico Kit de Condensadores Surtido Conjunto de Componentes 10 unids Valor
US$1.76 US$3.20
0
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Vedamurthy 05/10/2018
Tested with couple of built in examples,and it seems to function well.Made an LED blink and fade.hope it works fine in future projects.Paper documentation is recommended.
Placa principal de desarrollo USB Geekcreit para Arduino UNO R3 ATmega16U2 AVR Geekcreit®: productos compatibles con placas oficiales de Arduino
US$16.09 US$22.99
0
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Vedamurthy 05/10/2018
Nice small bearings.Dimensions are almost accurate on measurement.Bearing action seems to be quite smooth.Hope it can take small loads.
10 rodamientos de bolas de ranura profunda blindados sellados de acero de 5 x 14 x 5 mm 605zz
US$5.04 US$9.78
0
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Vedamurthy 01/10/2018
Well machined item.Dimensions are pretty close to the listed value.Hope it can take considerable torque.
Acoplamiento de eje flexible de aluminio de 5 mm x 10 mm OD19 mm x L25 mm CNC Stepper motor Acoplador Conector
US$8.07 US$8.99
0
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Vedamurthy 01/10/2018
Well machined block.However the dimensions measure 39.5mmX38.5mmX12mm.Hope there is no leak.
Bloqueo de Refrigeración por Agua de CPU de Aluminio de 40x40x12mm Para Disipador Térmico del Radiador de Gráficos de CPU
US$4.19 US$4.00
0
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