Pulse shaper for tachometer

Simple generator of rectangular pulses, working from household AC power 50 Hz has been described in [1]. There's enough talk about the principles of its work and are timing charts obtained at the output pulses. Leak test pulse counter ID-2 (tachometer), the degree of protection IP65.Schetchik pulses PH-2 (tachometer) has a wide temperature range. For the formation of short pulses in games there are two methods: a derivation of the input pulses and pulse shaping using logs­cal circuits. Fig. Atak as the duration of all the one-shot pulse output the same voltage that the device will be proportional to the frequency of sparks. PA1 can calibrate the scale in the shaft speed (rpm). PI pulse shaper can operate on the principle of converting the light flux from the source LN (LED, incandescent and so on. n.) special photodetector (photoelectric cell, photodiode), closed the narrow aperture in the current or voltage pulses that occur at the time of the passage of slots (short pulses Mu in Fig.

Pulse generator for calibration of the tachometer

The pulse shaper comprises a nonlinear transmission line segment and a shorted transmission line linear at its output. The material used in non-linear lines of the ferroelectric to the paraelectric state with deposited metal electrode, and a shorted transmission line segment linear contains a ferroelectric capacitor. To make better use of the machine timers NE555 (KR1006VI1), NE556. They have a range of power better suited. To gauge slots entering the input amplifier further time delay is unacceptable. On the contrary, it should generate as much as possible the steep leading and trailing pulses at a given threshold level komparatsii.

Pulse shaper - YouTube

She is not afraid of static circuits (for example, decoders with on indicators), or to control external enough inertia­onnymi devices, but it can trigger the trigger, or another one-shot (see. below), if the input is connected to its output of this circuit. In this case, to calculate the pulse width using the same ratio as for the monostable multivibrator. Fig. Pulse shaper does not respond to contact bounce on closing, because capacitor voltage during the entire duration of the debounce enough to trigger the triac (Figure 7, Figure 8). If you have any impulse noise in the onboard vehicle network in the closed circuit breaker contacts 17, the launch of the electronic key 9 is spared triac gate with a 9-5 reverse inclusion diode 9-6 shorted diode open 3, ie, to the diode through the resistor 9-4 9-6 applied reverse voltage. The pulse width determines the resistor R5, and the length of the pause depends on the resistance circuit R4R6. The output of the pulse generator receives a pulse shaper to reset the counter DD3, made the inverter DD1.