- Frequency range: 1Hz-75MHz (in fact, it can work up to 78MHz).
- Four-digit or five-digit display resolution (for example, x.KHz xxx, x.xxx.MHz, or xx.xxMHz).
- Automatic switching range with different gate times.
- Input impedance: 1.1 M, parallel to about 10pF.
- Input sensitivity: Typically less than 20mV RMS from 1Hz-100KHz, rising to 35mV at 20MHz and 75mV at 50MHz (150mV at 78MHz).
DESCRIPTION
- Type: DIY Kit
- Frequency Range: 1Hz-75MHz
- 50MHz Input Impedance: 1.1M, Parallel with about 10PF
- Resolution: Max. 1Hz
- Current Consumption: 50mA with 7 to 9V Input Jack
- Socket of Input: BNC
- Display: Digital LED Display
- PCB Size: 80x58mm/3.15x2.28"
LIST OF MATERIALS
RESISTORS (0.25 W , 1%)
- 8 x R1-R8 1 k
- 2 x R9, R15 10 k
- 1 x R10 100 k
- 1 x R11 1 M
- 1 x R12 220
- 1 x R13 56 k * according to the different batches of C3355, the resistance can change
- 1 x R14 470
CAPACITORS
- 1 x C1 470n Polypropylene
- 1 x C2 100 p Ceramics
- 2 x C3 C5 100n Polypropylene
- 1 x C4 47u Electrolytic
- 2 x C6, C8 10u Electrolytic
- 1 x C7 6-40 p Variable
- 2 x C14, C15 22 p Ceramic
INTEGRATED CIRCUIT
- 1 x U1 PIC16F628A (Programmed) + 18pin IC socket
- 1 x U2 LM1117-5V SMD
TRANSISTORS
- 1 x Q1 C945
- 1 x Q2 J310
- 1 x Q3 C3355
DIODES
- 6 x D1-D6 1N4148
- 1 x D7 1N5819
VARIOUS
- 1 x J1 SIL Socket & header 16Pin
- 1 x J2 BNC socket
- 1 x J3 DC_CZ_ZM socket adapter DC
- 1 x switch button SW1 AN_SW
- 1 x switch button SW2 SW2X2
- 1 x 1 Crystal 20 MHz
- 2 x SG1 7-segment 2-digit display common cathode Red
- 1 x SG3 7-segment 1-digit display common cathode Red
- 1 x PCB Main
- 1 x PCB display
- 2 x Copper pillar + + Spring screw Washer