Logic level tester circuit 2
Source: InternetPublisher:fish001 Keywords: logic level tester light emitting diode Updated: 2021/10/20
It uses LM324 operational
amplifier A as the voltage comparator. When the input signal is high level
(compared with the threshold voltage set by potentiometer RP), the red light -emitting diode VLi in the three-color light-emitting diode VL
lights up, and VL2 does not light up; when the input signal is low level, the green light-emitting diode VLz lights up, VLi does not light up; when the input
terminal is a pulse signal, VLi and VLz flash alternately; when the frequency is higher, the luminous tube turns orange-red.
- Making a photometer with light measuring function
- LED acceleration and deceleration motion display composed of CD4017
- Laser detection and indicating device system circuit design
- Design and production of a practical electronic counting device
- Electronic massage and acupuncture device circuit
- Infrared remote control device circuit
- SC3071 touch step dimming light circuit
- Corridor automatic light-off device
- Seven-way flashing light string circuit
- Electronic rapid starter for fluorescent lamps
- Circuit diagram of using photoelectric coupler to make mobile phone call reminder
- LED lighting display detection circuit with overload protection
- LED voltage measurement circuit diagram
- Pulse LED power saving indicator light
- Several other phase sequence discriminator circuits a
- LED tuning indication circuit
- Using light-emitting diodes as piezoelectric signal generator display circuit
- Using LM3915 and light-emitting diodes to measure the output low-frequency power circuit
- LED flasher using programmable unijunction transistor
- CMOS-Light Emitting Diode LED Interface
京公网安备 11010802033920号