platino signal generator (130407-1)
Overview
Overview
Détails
Bare PCB # 130407-1 for the project Experimenter's Function Generator, as published in Elektor Magazine edition January/February 2015.
This simple Platino-based Signal Generator is designed for not too demanding (hobbyist) applications. It is usable for applications like signal tracing, clocking of MCU circuits, audio filter & loudspeaker testing, tuning, etc.
A Signal generator device generates signals of different frequencies. The Platino Signal generator device uses the Elektor’s Platino board to design a real time, straight forward, non complicated design of the Signal generator. Inspired by Elektor’s AVR SDR project.
Specifications:
- DC Input: 18 V to 20 VDC
- Elektor Platino with ATMEGA1284P microcontroller
- 20 X 4 LCD Display
- Standard BNC type connectors for outputs / input
- One square wave output up to 10 MHz, 5 V and 3.3 V output level switchable
- Other outputs: Sine, Square, triangular, Sawtooth, Inv Sawtooth, Pulses, Arbitrary and Random (Noise)
- One Frequency Modulation input
Features:
- Programmable waveform output of different types of waves up to 100 KHz is given as output by the device through connector K6
- Square wave output, 5 V and 3.3 V selectable DC voltage output signal through connector K5
- Frequency Modulation input through connector K7
- All selections are set using a single rotary encoder with push button and a back button
- The device can be powered from a standard 18 V laptop power adapter
- Setup mode for Arbitrary and Clock mode
- Normal mode for other output waveforms
Amplitude, frequency, Offset of waveform can be changed in real time.
Component list
On Signal Generator Board:
Resistors
(Default: 5%, 0.25W)
R1,R3,R5,R7,R9,R11,R13,R17 = 10kΩ
R2,R4,R6,R8,R10,R12,R14,R15,R16,R18,R19 = 20kΩ
R20 = 100Ω
R21,R24 = 1kΩ
R22 = 1.8kΩ
R23 = 120Ω
R25,R26 = 8.2kΩ 3.9kΩ
R27,R28 = 1Ω 2W
R29,R30 = 10Ω 68Ω 1%
P1 = 100kΩ multiturn trimpot, vertical
Capacitors
C1 = 100pF
C2,C4 = 470µF 16V radial
C3,C5,C6,C9 = 100nF radial
C7,C8 = 22µF 25V radial
C10,C11 = 1000µF 63V 35V radial
C12 = 470µF 35V radial
Semiconductors
IC1 = TL082ACP
IC2 = (CD)74HC4051
IC3 = LM337KCSE3
IC4 = MC7805
IC5 = LM317TG
IC6 = LM336BZ-2.5V
D1 = BY500-800-E3/4
D2 = BZX79-C5V1
D3,D4 = 1N4007
Miscellaneous
K1 = 10-way pinheader socket strip, SIL, straight
K2 = 8-way pinheader socket strip, SIL, straight
K3 = 12-way pinheader socket strip, SIL, straight
K4 = 6-way (2x3) pinheader socket, double row
K5,K6,K7 = 2-way pinheader, vertical, 0.1” pitch
K8 = 2-way PCB screw terminal block, 0.2” pitch
IC socket, DIP-16
IC socket, DIP-8
PCB no. 130407-1
On Platino*:
Resistors (Default: 5% 0.25W)
R3 = 47Ω
R4,R5,R6,R7,R10,R12 = 10kΩ
R11 = 4.7kΩ
P1 = 10kΩ, trimpot, horizontal
Capacitors
C1,C2 = 22pF, 50V, C0G/NP0, 0.1” pitch
C5,C6 = 100nF, 50V, X7R, 0.2” pitch
Semiconductors
IC1 = ATMEGA1284P-PU, programmed
T1 = BC547C
Inductors
L1 = 10µH
Miscellaneous
IC socket, DIP-40
LCD1 = LCD, 4x20, 5V, with backlight
S5A = rotary encoder with pushbutton
X1 = 20MHz quartz crystal, CL= 18pF
K1,K2,K5 = 40-pin SIL pinheader, vertical
K4 K3 = 6 pins cut from 80-pin double-row pinheader, vertical
K9 = 16 pins cut from 36-way pinheader receptacle (socket), SIL, vertical
S4A = pushbutton
*Please refer to www.elektor-magazine.com/100892 for a full description of Platino (log in required).
More information on the Experimenter's Function Generator project, see:
Platino 1.4 (150555) is compatible with the previous version but there are two new solder jumpers that are, of course, not mentioned in the function generator article: JP15 & JP16. These jumpers control part of the LCD and must be set to ‘D’ for this project (and _ALL_ other “old” Platino projects with an LCD).
Spécifications
réf. | 16433 |
---|---|
marque | Elektor Labs |
réf. de circuit imprimé | 130407-1 |