Ken Stone Utility LFO
Low Frequency Oscillators

Ken Stone Utility LFO

Dual Ken Stone General Purpose Low Frequency Oscillator

Overview

Files

Bill of materials

Description

This module is a dual utility LFO offering manually variable wave shapes. Standard waveshapes are falling ramp variable through triangle to rising ramp, and variable pulse width. A fixed square is also available, as is a combination waveshape that is variable between the saw/tri output and the square. This is a MIX not a morph. Optional switches allow the variable outputs of the two LFOs to be intermixed.

Files

Project schematics / Ken Stone Utility LFO
Title Version Creation date Copyright notice Software Download link
Printed Circuit Board (original version)

The original schematics was obtained from an open source at: http://www.elby-designs.com/webtek/cgs/cgs58/cgs58_lfo.html

0.9 2/1/2019 Ken Stone DipTrace Schematics Download PDF
Control panel and its connections to the PCB

The original schematics was obtained from an open source at: http://www.elby-designs.com/webtek/cgs/cgs58/cgs58_lfo.html

0.9 2/2/2019 Ken Stone DipTrace Schematics Download PDF
Simulation / Ken Stone Utility LFO
Title Version Creation date Copyright notice Software Download link
Version 0.9 simulation

Version 0.9 simulation

1.0 2/17/2019 Delian Diver LTspice IV Download file

Bill of materials

PCB (original version)
# Value Quantity Designator Comment
Semiconductors
1 1N4148 4 D1, D2, D3, D4
2 BC547 2 Q1, Q2
3 TL074 2 U1, U2
4 TL072 1 U3
Resistors
1 100K 6 R1, R10, R21, R24, R26, R5
2 1K 14 R11, R13, R14, R15, R18, R22, R23, R27, R28, R29, R3, R30, R8, R9
3 4K7 2 R12, R19
4 150K 2 R16, R2
5 2K2 2 R17, R7
6 10K 2 R20, R4
7 47K 2 R25, R6
Capacitors
1 47n 2 C1, C6
2 10uF 2 C2, C4
3 100nF 5 C3, C5, C7, C8, C9
Inductances
1 Bead 2 L1, L2
Other
1 2.54/3P 6 J1, J2, J3, J7, J8, J9
2 2.54/4P 2 J10, J5
3 2.54/2P 2 J11, J6
4 3.96-3P 1 J4
Panel (original version)
# Value Quantity Designator Comment
Semiconductors
1 Red LED 2 D1, D2
Variable Resistors
1 100k/Lin 4 VR1, VR2, VR5, VR6
2 500k/Lin 2 VR3, VR4
Other
1 2.54/2P 2 J1, J2
2 2.54/4P 2 J10, J9
3 4mm Banana In 8 J11, J12, J15, J16, J3, J4, J7, J8
4 2.54/3P 6 J13, J14, J17, J18, J5, J6
Ken Stone
Author:
Ken Stone

Australian Musical Instruments Designer

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