555 simple electronic keyboard circuit (2)
As the figure 14-41 shows, the multivibrator is composed of the 555 and some capacitance resistance components, the oscillation frequency depends on the values ...
555 high voltage generator circuit
As the figure 16-18 shows, the high voltage generator uses the 555 as the core, the oscillation voltage is boosted by the step-up transformer. The astable multi...
555 high voltage generator circuit
As the figure 16-18 shows, the high voltage generator uses the 555 as the core, the oscillation voltage is boosted by the step-up transformer. The astable multi...
27MHz quartz crystal oscillator circuit
The 27MHz quartz crystal oscillator circuit is as shown in figure 1. The biasing circuit is composed of the R1, R2 and R3, C6 is the bypass capacitor. The parti...
27MHz quartz crystal oscillator circuit
The 27MHz quartz crystal oscillator circuit is as shown in figure 1. The biasing circuit is composed of the R1, R2 and R3, C6 is the bypass capacitor. The parti...
1MHz quartz crystal oscillator circuit
The oscillator circuit which is composed of the 1MHz quartz crystal resonator and the NAND gate is as shown in the figure, the NAND gate 3 is the output buffer ...
1MHz quartz crystal oscillator circuit
The oscillator circuit which is composed of the 1MHz quartz crystal resonator and the NAND gate is as shown in the figure, the NAND gate 3 is the output buffer ...
1024kHz and 4kHz square-wave output circuit
The circuit SJT is a 1024kHz warming crystal oscillator. Circuit is shown as the chart. As its output signal level is low, so the following transistor VTl is us...
1024kHz and 4kHz square-wave output circuit
The circuit SJT is a 1024kHz warming crystal oscillator. Circuit is shown as the chart. As its output signal level is low, so the following transistor VTl is us...
Mutiple Output Crystal Oscillator Sensor
As shown in the figure is a multiple output crystal oscillator. It is mainly composed of 3 gates of Al, four resistances, two capacitances and a piece of crysta...
Mutiple Output Crystal Oscillator Sensor
As shown in the figure is a multiple output crystal oscillator. It is mainly composed of 3 gates of Al, four resistances, two capacitances and a piece of crysta...
The quartz crystal oscillator test circuit diagram
...
The quartz crystal oscillator test circuit diagram
...
Quartz 1Hz Timebase
Here is one basic circuit of a simple but accurate 1Hz timebase generator built around a standard Quartz clock circuit board. Just lift the clock PCB from any c...
Quartz 1Hz Timebase
Here is one basic circuit of a simple but accurate 1Hz timebase generator built around a standard Quartz clock circuit board. Just lift the clock PCB from any c...
Electronic fishing shrimp machine circuit diagram 2
The ectronic fishing shrimp machine circuit is composed of the astable oscillator, inverter circuit, high voltage output circuit, and the circuit is shown as th...
Electronic fishing shrimp machine circuit diagram 2
The ectronic fishing shrimp machine circuit is composed of the astable oscillator, inverter circuit, high voltage output circuit, and the circuit is shown as th...
The NE555 FM modulation circuit
In the figure is the NE555 FM modulation circuit. In the figure, NE555 7-pin is connected with a FM modulation circuit which is composed with R5 and C2, but the...
The NE555 FM modulation circuit
In the figure is the NE555 FM modulation circuit. In the figure, NE555 7-pin is connected with a FM modulation circuit which is composed with R5 and C2, but the...
TWO OUADRANT EXPONENTIAL CONTROL
This circuit uses a dual operational amplifier (TL082) to form a voltage-controlled oscillator (VCO). With the component values shown, the output-frequency rang...