2007年6月5日 · We have a relatively old (ca. 1970s) design for a DC-DC converter which centers on a saturable core toroid transformer. A center tap feedback winding provides the signals to the bases of two complementary NPN transistors; these transistors nominally switch at around 5 kHz. At room temp and above, the circuit starts up fine.

2018年2月22日 · 4) The switching frequency (for the drive) should be set somewhere between 3 and 5 kHz - note that in the OP's original post, it was indicated this had been set to 2.5 kHz. 5) According to the drive manufacturer documentation, A SINE WAVE FILTER IS REQUIRED - REGARDLESS OF CABLE DISTANCE BETWEEN DRIVE AND MOTOR.

2002年5月29日 · It sounds like a core heating thing. To be able to judge if that is the case, one needs to look for capacitors (or long cables) to resonate with. Reactor/capacitor combinations often have a tendency to ring somewhere between 5 and 20 kHz and that is an extremely effective frequency when it comes to induction heating.

2008年4月29日 · 102.4 kHz sampling, 130dB dynamic range . Upvote 0 Downvote. Apr 30, 2008 #5 GregLocock Automotive. Apr 10 ...

2005年7月18日 · I generally share the signal and power ground together for analog(and mixed circuits <1 KHz).Does this practice introduce noise in the system. The circuits many times does not work if I separate them, so I am forced to do it to make it work. Am I missing something about designing here.

2005年7月8日 · As far as Cannons' Technology, it is simply a case of their 12.5 Khz signal being shunted to ground due to the low impedance of the caps at that frequency (which is the reason for the blocking units).

2000年5月12日 · Dear bohica,The mV/g is a unit for sensitivity factor relating the voltage output of an accelerometer to the acceleration unit g = 32.3 ft/sec*2 = 386.4 in/sec*2 = 9.81 m/s*2.The mm/s is a unit of velocity (one parameter of vibration parameters, i.e., acceleration, velocity and displacement)Now to convert the acceleration output to velocity reading, you need to know …

2004年11月16日 · "1 MHz spacing": if you have two tones at 1 KHz spacing, you would need 1000 times the amount of DC bypass capacitance on the power supply as you would with two tones at 1 MHz. Also, with that whoping big capacitance, you would need very low series resistance in the capacitors.