Description

Enoki found some Ni-MH batteries capacity half only in the field test of wireless sensors. The wireless transmitter sends signal intermittently to save power consumption.

So Enoki developed the discharger to test batteries life for pulse load, and sells now the PCB (Print Circuit Board) now.

Principle

A Micro Computer Unit (MPU) can generates arbitrary precise duty pulse easily. While the pulse height means peak current (power). Using FET (Field Effect Transistor), the discharger controls the peak current by feed back constant current circuit.

Development

In the development, Enoki did 2 patent

applicants^[4][5] at JPO and a report^[6] at Institute of Electrical Engineers of Japan.

Specifications

Layer:2, Thickness:1.6mm, Dimensions:121x100mm, Copper weight:1oz

Distribution

Enoki also distributes the PCB Assy.

Payment

Enoki accepts PayPal payment^[2]. Enoki has the business account, so you can buy Enoki's product by credit card. In case of domestic customers, bank transfer is cheaper and welcome for Enoki.

Ref

[4] PAT. Application Pub. No. 2024-129764
[5] PAT. Application Pub. No. 2023-166943
[6] Discharger scratch loading repeated pulses for an experimental evaluation of

secondary battery capacity, Koichi Enoki, conf2022-program_20220729 GSI-5

Description

Enoki made a pulse generator for glow plug heater before. The circuit works at 3V minimum. IC 4049 and 4011 generate successive pulses. A FET switches on/off with high voltage.

Principle

Toshiba COMS IC works at 3V to 18V. And they are cheap and easy to get. If you select low voltage gate FET, The FET might switch on/on at 3V.

Development

In the development, Enoki did a Utility model registration^[7]

Specifications

Layer:2, Thickness:1.6mm, Dimensions:76x45 mm

Distribution

Enoki also distributes the PCB Assy.

Payment

Enoki accepts PayPal payment^[2]. Enoki has the business account, so you can buy Enoki's product by credit card. In case of domestic customers, bank transfer is cheaper and welcome for Enoki.

Ref

[7] Utility model registration No. 3132951

Photo5 PG

Description

Level switch PWB assembly consist of detector, transmitter and receiver as shown in Figure2.

Detector

The detector detects small current between conductive stand and probe.

It has Normal and Reverse mode.
Normal: off -> on (level up)
Reverse: off -> on (level down)

The detector may transmit the signal to transmitter 33m long by 2-wire current.

Transmitter

The transmitter supplies power with the detector and tells receiver 6km far.

The body includes step up DC-DC converter for 1.5V x 2 batteries.

Enoki recommends to adopt fine battery holder that has Ni plating electrode well. Poor Ni plating causes abrupt power down.

Receiver

The receiver turns on/off pump through SSR^[1], when it receives the signal.

Distribution

Enoki will distribute Detector PWB Assy, Transmitter and Receiver PWB Assy in near future.

If you have any request and need other probe or some thing, Enoki will ship them in the world.

The photos shows prototype, so the actual PWB Assy may be different.

Payment

Enoki accepts PayPal payment^[2]. Enoki has the business account, so you can buy Enoki's product by credit card.

Ref

[1] SSR and Heat Sink 40amp Dead link
[2] Pay Pal Merchant Fees

Photo1 Detector US$9

Photo2 Body US$10