A memory element is made on elements U1.1 and U1.2 of the CD4001 chip. If a longer pulse is applied to the input of the device, the capacitor C1 will charge through the resistor R2.

RCA Low Power COS MOS Gates NOR Positive Logic File Number 345CD4000 CD4000D CD4001 CD4001D CD4002 CD4002DDUAL 3-INPUT GATE PLUS INVERTER, QUAD 2-INPUT GATE, ...

The Operational Amplifier 741, NOR Gate CD4001 and LDR are the backbones of the circuit. The LDR and the LED will be installed at the opening of the letter-box so that the light from the LED keeps on ...

You can’t run a digital gate like the CD4001 on less than the threshold voltage. Texas Instruments characterizes its CD4001 at 5, 10, and 15 V.

The ultrasonic transmitter transducer is driven by two complementary buffer stages of CD4001 and its current drain is very low. Fig. 1: Ultrasonic Burglar Alarm: Transmitter unit The receiver unit ...

Electronic Letter Box Circuit Diagram Circuit Components IC LM741 – 1 CD4001 – 1 Resistors R1 (2.2M) – 1 R2 (560K) – 1 R3,R4,R5 (1K) – 3 R6 (220k) – 1 R7 (220E) – 1 C1,C2 (.1uF) – 2 Miscellaneous LED1 ...

Unorthodox warning alarm circuit presented here is infact a single chip based general purpose sounder, which produces a pulsed alert tone when its input receives a valid trigger signal. The circuit ...