Synth & Eurorack Parts / DIY

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.

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.

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

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.

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.

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

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

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.

Phillips panhead machine screw, M3 metric, zinc. Designed to go through a hole or nut that is pre-tapped to form a mating thread for the screw. Phillips drive is the most common drive used and is designed to "camout" when the screw reaches optimum tightness, thus preventing damage to the screw head. See S-HS-M3-6-X for colored 6mm M3 screws.

The CD4050B devices are noninverting hex buffers, and feature logic-level conversion using only one supply voltage (VCC). The input-signal high level (VIH) can exceed the VCC supply voltage when these devices are used for logic level conversions. These devices are intended for use as CMOS to DTL or TTL converters and can drive directly two DTL or TTL loads. (VCC = 5 V, VOL ≤ 0.4 V, and IOL ≥ 3.3 mA.) Features:

• Noninverting
• High Sink Current for Driving 2 TTL Loads
• High-to-Low Level Logic Conversion
• 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

Applications

• CMOS to DTL or TTL Hex Converters
• CMOS Current Sink or Source Drivers
• CMOS High-to-Low Logic Level Converters

CD4001UB quad 2-input NOR gate provides the system designer with direct implementation of the NOR function and supplements the existing family of CMOS gates. Features:

• Propagation delay time = 30 ns (typ.) at CL = 50 pF, VDD = 10 V
• Standardized symmetrical output characteristics
• 100% tested for maximum quiescent current at 20 V
• Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of ’B’ Series CMOS Devices"
• 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

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)
  

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.

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.

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.

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.

Bananuts are anodized aluminum custom minijack nuts following Buchla/Serge coloring code: blue, purple, red, orange, yellow, white, green and black. These nuts are great for color-coding jacks or color-theming modules. Sold individually.

TL061 single op amp in an 8-pin DIP package. The JFET-input operational amplifiers of the TL06x series are designed as low-power versions of the TL08x series amplifiers. They feature high input impedance, wide bandwidth, high slew rate, and low input offset and input bias currents. The TL06x series features the same terminal assignments as the TL07x and TL08x series. Features

• Very Low Power Consumption
• Typical Supply Current: 200 µA (Per Amplifier)
• Wide Common-Mode and Differential Voltage Ranges
• Low Input Bias and Offset Currents
• Common-Mode Input Voltage Range Includes VCC+
• Output Short-Circuit Protection
• High Input Impedance: JFET-Input Stage
• Internal Frequency Compensation
• Latch-Up-Free Operation
• High Slew Rate: 3.5 V/µs Typical

Larger threaded black Bananuts for mounting potentiometers or other hardware with M7 bushings. These nuts look great beneath smaller sized knobs.

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.

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.

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

CD4027B is a single monolithic chip integrated circuit containing two identical complementary-symmetry J-K flip flops. Each flip-flop has provisions for individual J, K, Set, Reset, and Clock input signals. Buffered Q and Q signals are provided as outputs. This input-output arrangement provides for compatible operation with the CD4013B dual D-type flip-flop. The CD4027B is useful in performing control, register, and toggle functions. Logic levels present at the J and K inputs along with internal self-steering control the state of each flip-flop; changes in the flip-flop state are synchronous with the positive-going transition of the clock pulse.