Pwm Generators
#PWM
#signal generator
#555 timer
#duty cycle
#frequency control
#pulse width modulation
#waveform generation
#electronic control
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Water Activated Alarm circuit
The circuit utilizes a 555 timer configured as an astable oscillator, powered by the emitter current of a BC109C transistor. In dry conditions, the transistor remains off due to the absence of bias current. However, when the probes become wet,...
dancing light using 555 timer
A dancing light can be easily constructed using a 555 timer wired in astable mode. This circuit alternately blinks two LEDs with a certain delay and can be modified to include additional LEDs or to control incandescent lamps. The oscillation...
Voltage Controlled Switch with 555
The old and omnipresent NE555 can be very good at something it was not meant for: driving relays or other loads up to 200 mA. The picture shows an example circuit: if the input level rises over 2/3 of the...
Relay driver with a 555
This 555 timer circuit below toggles a relay when a button is pressed. Pins 2 and 6, the threshold and trigger inputs, are held at 1/2 the supply voltage by the two 10K resistors. When the output is high, the...
Voltage doubler circuit using 555 timer
This voltage doubler circuit utilizes a 555 timer integrated circuit configured as an astable multivibrator. It can deliver a maximum output current of 50mA; exceeding this limit will result in a reduction of the output voltage. The actual output voltage...
555 Fm Circuit Circuit
Circuit for applying a DC-coupled FM or PPM to a 555 configured as an oscillator. IC-1 is a Motorola MC-1374P, and IC-2 is a National LH0002C. L1 and L2 are Mouser Electronics #421IF200. C1 and C2 are silver mica capacitors...
timer 555 schematic
The Simple Timer with a 555 timer is a basic timer circuit that can be utilized in various electronic devices. This circuit leverages the monostable multivibrator mode of the 555 Integrated Circuit (IC). The output control circuit is designed to...
astable circuit produce pulses
This circuit was first introduced by Signetics Corporation as the SE555/NE555 around 1971. Pin connections and functions are as follows: Pin 1 (Ground) is the most negative supply potential of the device, typically connected to circuit common when powered by...
Timed Burglar Alarm N/O - N/C
This is a simple but effective alarm circuit that can reset itself after a user-defined time. It features normally open and normally closed triggers, enhancing its practicality. The circuit utilizes a 555 timer, allowing the alarm to automatically reset after...