Pedal Parts / DIY

This vintage knob design has been used on numerous boutique pedals. These classy knurled pointer knobs feature a slotted set screw, and fit ¼" solid shaft potentiometers. These are a close match to the Davies 1400.

• Height: 0.43 in.
• Length: 0.825 in.
• Fits ¼" shaft with set screw

Tapered rubber feet with 3M self-adhesive backing. These round feet have a ½” diameter and can be used to provide grip and slight elevation (0.15") when secured to most project enclosures. Great for effects pedals and rack mount units when removed from the rack.

NJM4580L dual op amp from JRC in a SIP8 package. The NJM4580L is the same as the DIP NJM4580 (JRC4580) otherwise. The SIP version is a great replacement for dual op amps in vintage circuits as well as a space saving package for some PCB layouts. The NJM4580 is a dual operational amplifier, specially designed for improving the tone control, which is most suitable for the audio application. Featuring noiseless, higher gain bandwidth, high output current and low distortion ratio, and it is most suitable not only for acoustic electronic parts of audio pre-amp and active filter, but also for the industrial measurement tools.

TL022 dual op amp in an 8-pin DIP package. The TL022 is a dual low-power operational amplifier designed to replace higher power devices in many applications without sacrificing system performance. High input impedance, low supply currents, and low equivalent input noise voltage over a wide range of operating supply voltages result in an extremely versatile operational amplifier for use in a variety of analog applications including battery-operated circuits.

CD4094B is an 8-stage serial shift register having a storage latch associated with each stage for strobing data from the serial input to parallel buffered 3-state outputs. The parallel outputs may be connected directly to common bus lines. Data is shifted on positive clock transitions. The data in each shift register stage is transferred to the storage register when the STROBE input is high. Data in the storage register appears at the outputs whenever the OUTPUT-ENABLE signal is high. Two serial outputs are available for cascading a number of CD4094B devices. Data is available at the QS serial output terminal on positive clock edges to allow for high-speed operation in cascaded systems in which the clock rise time is fast.

LF347 quad op amp in a 14-pin DIP package. The LF347 is a low cost, high speed quad JFET input operational amplifier with an internally trimmed input offset voltage ( BI-FET II™ technology). The device requires a low supply current and yet maintains a large gain bandwidth product and a fast slew rate. In addition, well matched high voltage JFET input devices provide very low input bias and offset currents. The LF347 is pin compatible with the standard LM348. This feature allows designers to immediately upgrade the overall performance of existing LF348 and LM324 designs. The LF347 may be used in applications such as high speed integrators, fast D/A converters, sample-and-hold circuits and many other circuits requiring low input offset voltage, low input bias current, high input impedance, high slew rate and wide bandwidth.

Tapered rubber feet with 3M self-adhesive backing. These square feet have a ½” length and width and can be used to provide grip and slight elevation (0.25") when secured to most project enclosures. Great for effects pedals and rack mount units when removed from the rack. See P-H12R-X for round feet.

The TL072 is a high speed JFET input dual operational amplifier incorporating well matched, high voltage JFET and bipolar transistors in a monolithic integrated circuit. The device features high slew rates, low input bias and offset current, and low offset voltage temperature coefficient.

The BC183 is a general purpose NPN transistor in a TO-92 case. The BC183 is commonly used in fuzz pedals and has a reputation as a warm sounding silicon transistor for fuzz.

This small PCB is a simple way to add an indicator light that pulses to the rate of LFOs and clocks used in pedals, synthesizers, and other equipment. Simply connect the positive supply voltage to V+, ground to GND, and the output of a positive signal (0 to V+) such as an LFO or clock to the IN pad. The trimmer can adjust how the LED reacts to the signal. Fully clockwise it will simply pulse on and off when paired with a strong signal. If the signal is a sine, triangle, or any other non-pulse type signal, adjusting the trimmer counter clockwise can dial in settings that follow the shape of the waveform, brightening and dimming with the changing voltage. For certain dual op-amp LFOs in effect pedals, the signal may not go low enough to turn the LED fully off.

Low profile DC jack with solder lugs. This jack is the perfect size for smaller builds where additional space is necessary. The low profile DC jack is also great for builds where aesthetics are a priority. For barrel plugs with a 5.5mm external diameter and 2.1mm internal diameter. Features two solder lugs for tip and ring.

2N7000 N-channel enhancement mode field effect transistors. 2N7000 MOSFETs are used in many DIY projects such as boost and distortion effects pedals.
Features:

• Voltage Controlled Small Signal Switch
• High Saturation Current Capability
• Rugged and Reliable
• High Density Cell Design for Low RDS(ON)
  

The 2N708 is a silicon NPN transistor in a TO-18 metal case type. The 2N708 is primarily intended for use in high speed switching and VHF amplification applications.

CD4007UB types are comprised of three n-channel and three p-channel enhancement-type MOS transistors. The transistor elements are accessible through the package terminals to provide a convenient means for constructing the various typical circuits as shown in Fig. 2. More complex functions are possible using multiple packages. Numbers shown in parentheses indicate terminals that are connected together to form the various configurations listed. Features:

• Standardized symmetrical output characteristics
• Medium Speed Operation — tPHL, tPLH = 30 ns (typ.) at 10 V
• 100% tested for quiescent current at 20 V
• Meets all requirements of JEDEC Tentative Standard No.

Brass inserts for knobs. Fits ¼” potentiometer shafts. Features a slotted set screw. These inserts are a great option for repairing knobs with stripped out set screws or for building DIY knobs using resin molds, 3D printing, or any other method.

Dress nuts for use with mini toggle switches. These plated dress nuts feature a chamfered edge for a professional look and work on any 1/4-40 UNS threaded bushing. Two sides are flatted for use with a tool when fastening.

CD4029B consists of a four-stage binary or BCD-decade up/down counter with provisions for look-ahead carry in both counting modes. The inputs consist of a single CLOCK, CARRY-IN\ (CLOCK ENABLE\), BINARY/DECADE, UP/DOWN, PRESET ENABLE, and four individual JAN signals, Q1, Q2, Q3, Q4 and a CARRY OUT\ signal are provided as outputs. A high PRESET ENABLE signal allows information on the JAM INPUTS to preset the counter to any state asynchronously with the clock. A low on each JAM line, when the PRESET-ENABLE signal is high, resets the counter to its zero count. The counter is advanced one count at the positive transition of the clock when the CARRY-IN\ and PRESET ENABLE signals are low. Advancement is inhibited when the CARRY-IN\ or PRESET ENABLE signals are high. The CARRY-OUT\ signal is normally high and goes low when the counter reaches its maximum count in the UP mode or the minimum count in the DOWN mode provided the CARRY-IN\ signal is low.

CD4093B consists of four Schmitt-trigger circuits. Each circuit functions as a two-input NAND gate with Schmitt-trigger action on both inputs. The gate switches at different points for positive- and negative-going signals. The difference between the positive voltage (VP) and the negative voltage (VN) is defined as hysteresis voltage (VH). Features:

• Schmitt-trigger action on each input with no external components
• Hysteresis voltage typically 0.9 V at VDD = 5 V and 2.3 V at VDD = 10 V
• Noise immunity greater than 50%
• No limit on input rise and fall times
• Standardized, symmetrical output characteristics
• 100% tested for quiescent current at 20 V
• Maximum input current of 1 µA at 18 V over full package-temperature range, 100 nA at 18 V and 25°C
• 5-V, 10-V, and 15-V parametric ratings
• Meets all requirements of JEDEC Tentative Standard No.

The CD4013B device consists of two identical, independent data-type flip-flops. Each flip-flop has independent data, set, reset, and clock inputs and Q and Q outputs. These devices can be used for shift register applications, and, by connecting Q output to the data input, for counter and toggle applications. The logic level present at the D input is transferred to the Q output during the positive-going transition of the clock pulse.

The CD4053B analog multiplexers are digitally-controlled analog switches having low ON impedance and very low OFF leakage current.

Linear regulator with an adjustable voltage range from 1.2V to 37V. This regulator can supply 1.5A of current making it a great option for power supplies.

The CD40106B device consists of six Schmitt-Trigger inputs. Each circuit functions as an inverter with Schmitt-Trigger input. The trigger switches at different points for positive- and negative-going signals. The difference between the positive-going voltage (VP) and the negative-going voltages (VN) is defined as hysteresis voltage (VH). Features:

• Schmitt-Trigger Inputs
• Hysteresis Voltage (Typical):
  
  • 0.9 V at VDD = 5 V
  • 2.3 V at VDD = 10 V
  • 3.5 V at VDD = 15 V
• Noise Immunity Greater Than 50%
• No Limit On Input Rise and Fall Times
• Standardized, Symmetrical Output Characteristics
• For Quiescent Current at 20 V
• Maximum Input Current Of 1 µA at 18 V Over Full Package Temperature Range: 100 nA at 18 V and 25°C
• Low VDD and VSS Current During Slow Input Ramp
• 5-V, 10-V, and 15-V Parametric Ratings

Mini fluted knob with infilled indicator line. Pairs well with the larger P-K850X. Fits ¼” (6.35mm) pot shafts.

• Height: 11mm
• Diameter: 15mm
• Fits 1/4" shaft with set screw

Replacement nut and washer for pots with a ⅜" bushing diameter.