Schiller Defigard 5000 DG5000 Defibrillator Pump

►Quick Detail:

Measurement of charging voltage of high-voltage capacitor:
The charging voltage of the high voltage capacitor is measured by two different circuits.
The first circuit to measure the charging voltage of the high voltage capacitor consists of resistors R251, R252 and R259
and R253, R254 and R260, which directly obtain the charge on the high-voltage capacitor terminals.
electrical voltage. The signals HV_M+ and HV_M- generated by the resistor divider attack the differential amplifier
U4C, which provides signal CHVM used as a measurement signal for microcontroller U16. Signal CHVM
Represents the charging voltage of the HV capacitor divided by 850.
The second circuit that measures the HV capacitor charging voltage is only used during the HV capacitor charging stage.
segment generates signals. The measurement signal is obtained through the primary winding of high-voltage transformer TR1,
Reflects the charging voltage of the high-voltage capacitor when transistor is turned off. From TR1 Beginning
The signal from the stage winding is picked up by transistor Q3 and associated components. level composition
provides the signal forming circuit. The output signal THVM  also represents HV
The charging voltage of the capacitor is divided by 850. Microcontroller U16 uses signals
THVM to measure the charging voltage of the HV capacitor in order to stop generating electricity to the HV
machine charging. 

►NOTES​:

When the defibrillator enters the hold phase, microcontroller  determines the HV capacitance via signal CHVM
energy stored in the device and check whether it is within the allowed tolerance range. if not like this,
U16 triggers the safe discharge of the high voltage capacitor. During the hold phase, microcontroller  activates the signal
EPDU, which causes  to conduct via open collector driver . in these circumstances
In this case, a defibrillation shock can be delivered to the patient. The hold phase lasts no longer than 20 seconds, after which
Microcontroller  triggers a safe discharge.
Precharge phase:
In semi-automatic mode using adhesive electrode cartridges, the main microprocessor of the CPU board
Initiates precharging of the capacitor during analysis of the ECG signal. precharge command and
The selection of the corresponding energy value is transmitted to the defibrillator via a serial link. Precharge process
As with the charging process, the maximum duration of the precharge phase is 20 s. When high
When the energy stored in the piezocapacitor is equal to the selected energy, microcontroller enters
Precharge completion stage.

►Key features:

► Company situation:

The company has been professionally operating various brands of original medical monitoring instruments since 2015. The company has many professional senior engineers and has sufficient ability to undertake various medical equipment maintenance work. Covering motherboards, sensors, probes, modules, connectors, shells, etc. for various medical monitoring equipment.

►About delivery:

We default to express delivery by DHL,Fedex,etc.We will contact you as soon as possible when sending express delivery. If you have any questions after receiving the express delivery, please feel free to contact us at any time.