Philips PM 5775 Manual page 32

+20 +5V +20 +5V"
y
FROM TRIGGER
CIRCUIT
——- CURRENT PATH IN THE REST POSITION
aaa CURRENT PATH WHEN 2223 CONDUCTS
MA 5753
Fig. VII-2. Simplified diagram of the pulse delay circuit
The voltage at °'B" drops by the same amount namely from +0.8 V to approx.
—3.2 V. Consequently the differential amplifier Z229/Z230 switches over and
Z230 and diode Z232 will be cut off. Transistor Z234 remains cut off as result