Electromechanical

US$2.51
Size: 25 x 15 x 20mm, Shaft Diameter: 2mm, Free-run speed @ 6V: 11500 rpm, Free-run current @ 6V: 70mA, Stall current @ 6V: 800 mA.
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US$17.77
This is a A4988 stepper motor driver carrier or a breakout board for Allegro’s easy-to-use A4988 microstepping bipolar stepper motor driver.
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US$43.80
This small hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 600 mA at 3.9 V, allowing for a holding torque of 180 g-cm (2.5 oz-in). The motor has four color-coded wires terminated with bare leads: black and green connect to one coil; red and blue connect to the other. It can be controlled by a pair of suitable H-bridges (one for each coil), but we recommend using a bipolar stepper motor driver.
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US$18.74
These aluminum gearmotor brackets let you securely mount Pololu’s 37D mm metal gearmotors to your project.
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US$12.17
Add an ear to your project with this well-designed electret microphone amplifier. This fully assembled and tested board comes with a 20-20KHz electret microphone soldered on.
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US$14.88
This module provides the flexbility to power most application range from 3.6V- 25V.  You can choose 5V direct output voltage with the switch or adjust the output voltage by the blue&white resistor.
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US$4.53
Maximum DC Voltage: 32 VDC. Maximum AC Voltage: 250 VAC. Mounting Hole: .250". Push to Reset. .250" Quick Connect. 
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US$4.53
Maximum DC Voltage: 32 VDC. Maximum AC Voltage: 250 VAC. Mounting Hole: .250". Push to Reset. .250" Quick Connect. 
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US$4.53
Maximum DC Voltage: 32 VDC. Maximum AC Voltage: 250 VAC. Mounting Hole: .250". Push to Reset. .250" Quick Connect. 
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US$3.86
Maximum DC Voltage: 32 VDC. Maximum AC Voltage: 250 VAC. Mounting Hole: .250". Push to Reset. .250" Quick Connect. 
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US$5.15
Maximum DC Voltage: 32 VDC. Maximum AC Voltage: 250 VAC. Mounting Hole: .250". Push to Reset. .250" Quick Connect. 
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US$4.53
Standard Rating: 3-20 AMPERE. Input Power: 125 VAC / 250 VAC. Dielectric Strength: 1500 VAC / 1 Minute. Interrupt Capacity: 125 VAC x 1000 A, 250 VAC x 1000 A. Insulation Resistance: > 100 Meg Ohm. Calibration: 25ºC-105ºC of rated Current-Continuously Carried.
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US$4.53
Standard Rating: 3-20 AMPERE. Input Power: 125 VAC / 250 VAC. Dielectric Strength: 1500 VAC / 1 Minute. Interrupt Capacity: 125 VAC x 1000 A, 250 VAC x 1000 A. Insulation Resistance: > 100 Meg Ohm. Calibration: 25ºC-105ºC of rated Current-Continuously Carried.
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US$4.53
Standard Rating: 3-20 AMPERE. Input Power: 125 VAC / 250 VAC. Dielectric Strength: 1500 VAC / 1 Minute. Interrupt Capacity: 125 VAC x 1000 A, 250 VAC x 1000 A. Insulation Resistance: > 100 Meg Ohm. Calibration: 25ºC-105ºC of rated Current-Continuously Carried. 
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US$4.53
Standard Rating: 3-20 AMPERE. Input Power: 125 VAC / 250 VAC. Dielectric Strength: 1500 VAC / 1 Minute. Interrupt Capacity: 125 VAC x 1000 A, 250 VAC x 1000 A. Insulation Resistance: > 100 Meg Ohm. Calibration: 25ºC-105ºC of rated Current-Continuously Carried.
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