ITEM NAME:NE555 pulse generator square wave rectangular wave frequency duty cycle adj F6F2 NE555 pulse generator square wave rectangular wave frequency duty cycle adj F6F2 size:20mm * 40mm/0.79*1.57 inch function: produce different frequencies of the square wave or rectangular wave Power supply: Input voltage: 5V-12VDC 5V power supply, the output current can be about 10MA 12V power supply, the output current can be about 30MA Frequency: 5 bands (measured) J1 file: 0.6Hz ~ 25Hz J2 file: 7Hz ~ 300Hz J3 file: 50Hz ~ 2.5kHz J4 block: 350kHz ~ 6.6kHz J5 block: 6.7kHz ~ 180kHz Duty adjustable range: 0.4-0.99 LED output instructions, low LED light, high level LED off, led flashing speed that frequency output changes; in addition to jumping hat can choose different frequency band, RV1 adjustment can adjust the frequency, adjust the choke in the regulation can be seen as Adjust the frequency change corresponding to the change; Input current: greater than equal 100MA Output voltage: 4.2V - 11.4V peak (with supply voltage change) Output frequency calculation formula: Cycle T = 0.7 (Ra + 2Rb) C Ra, Rb is 0-10K adjustable; Input: VCC GND Output: VCC OUT GND Here the input voltage and output are consistent, the purpose is convenient for users to use, can be followed by power supply. OUT is the output frequency signal. material:metal colour:blue packing:1*small signal generator Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.